added caching, added PUT methods, refactored code

application/src/main/data/upgrade/3.4.4/schema_update.sql

@@ -27,6 +27,6 @@ CREATE INDEX IF NOT EXISTS idx_alarm_comment_alarm_id ON alarm_comment(alarm_id)
 
 CREATE TABLE IF NOT EXISTS user_settings (
     user_id uuid NOT NULL CONSTRAINT user_settings_pkey PRIMARY KEY,
-    settings varchar(10000),
+    settings varchar(100000),
     CONSTRAINT fk_user_id FOREIGN KEY (user_id) REFERENCES tb_user(id) ON DELETE CASCADE
 );

application/src/main/java/org/thingsboard/server/controller/BaseController.java

@@ -128,6 +128,7 @@ import org.thingsboard.server.dao.tenant.TbTenantProfileCache;
 import org.thingsboard.server.dao.tenant.TenantProfileService;
 import org.thingsboard.server.dao.tenant.TenantService;
 import org.thingsboard.server.dao.user.UserService;
+import org.thingsboard.server.dao.user.UserSettingsService;
 import org.thingsboard.server.dao.widget.WidgetTypeService;
 import org.thingsboard.server.dao.widget.WidgetsBundleService;
 import org.thingsboard.server.exception.ThingsboardErrorResponseHandler;
@@ -189,6 +190,9 @@ public abstract class BaseController {
     @Autowired
     protected UserService userService;
 
+    @Autowired
+    protected UserSettingsService userSettingsService;
+
     @Autowired
     protected DeviceService deviceService;
 

application/src/main/java/org/thingsboard/server/controller/UserController.java

@@ -15,6 +15,7 @@
  */
 package org.thingsboard.server.controller;
 
+import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.node.ObjectNode;
 import io.swagger.annotations.ApiOperation;
 import io.swagger.annotations.ApiParam;
@@ -27,6 +28,7 @@ import org.springframework.security.access.prepost.PreAuthorize;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
 import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestMethod;
@@ -34,6 +36,7 @@ import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.ResponseBody;
 import org.springframework.web.bind.annotation.ResponseStatus;
 import org.springframework.web.bind.annotation.RestController;
+import org.thingsboard.common.util.JacksonUtil;
 import org.thingsboard.rule.engine.api.MailService;
 import org.thingsboard.server.common.data.User;
 import org.thingsboard.server.common.data.exception.ThingsboardErrorCode;
@@ -59,6 +62,8 @@ import org.thingsboard.server.service.security.system.SystemSecurityService;
 
 import javax.servlet.http.HttpServletRequest;
 
+import java.util.Arrays;
+
 import static org.thingsboard.server.controller.ControllerConstants.CUSTOMER_ID;
 import static org.thingsboard.server.controller.ControllerConstants.CUSTOMER_ID_PARAM_DESCRIPTION;
 import static org.thingsboard.server.controller.ControllerConstants.DEFAULT_DASHBOARD;
@@ -87,6 +92,7 @@ import static org.thingsboard.server.controller.ControllerConstants.UUID_WIKI_LI
 public class UserController extends BaseController {
 
     public static final String USER_ID = "userId";
+    public static final String JSON_PATHS = "jsonPaths";
     public static final String YOU_DON_T_HAVE_PERMISSION_TO_PERFORM_THIS_OPERATION = "You don't have permission to perform this operation!";
     public static final String ACTIVATE_URL_PATTERN = "%s/api/noauth/activate?activateToken=%s";
 
@@ -382,45 +388,54 @@ public class UserController extends BaseController {
     }
 
     @ApiOperation(value = "Save user settings (saveUserSettings)",
-            notes = "Save user settings for specified user id. " )
+            notes = "Save user settings represented in json format for authorized user. " )
     @PreAuthorize("hasAnyAuthority('SYS_ADMIN', 'TENANT_ADMIN', 'CUSTOMER_USER')")
-    @PostMapping(value = "/user/{userId}/settings")
-    public UserSettings saveUserSettings(@ApiParam(value = USER_ID_PARAM_DESCRIPTION)
-                                         @PathVariable(USER_ID) String strUserId, @RequestBody UserSettings userSettings) throws ThingsboardException {
-        checkParameter(USER_ID, strUserId);
+    @PostMapping(value = "/user/settings")
+    public JsonNode saveUserSettings(@RequestBody JsonNode settings) throws ThingsboardException {
+        SecurityUser currentUser = getCurrentUser();
 
-        UserId userId = new UserId(toUUID(strUserId));
-        User user = checkUserId(userId, Operation.WRITE);
+        UserSettings userSettings = new UserSettings();
+        userSettings.setSettings(settings);
+        userSettings.setUserId(currentUser.getId());
+        return userSettingsService.saveUserSettings(currentUser.getTenantId(), userSettings).getSettings();
+    }
+
+    @ApiOperation(value = "Update user settings (saveUserSettings)",
+            notes = "Update user settings for authorized user. Only specified json elements will be updated." +
+                    "Example: you have such settings: {A:5, B:{C:10, D:5}}. Updating it with {A:10, E:6} will result in" +
+                    "{A:10, B:{C:10, D:5}}, E:6")
+    @PreAuthorize("hasAnyAuthority('SYS_ADMIN', 'TENANT_ADMIN', 'CUSTOMER_USER')")
+    @PutMapping(value = "/user/settings")
+    public JsonNode putUserSettings(@RequestBody JsonNode settings) throws ThingsboardException {
+        SecurityUser currentUser = getCurrentUser();
 
-        userSettings.setUserId(userId);
-        return userService.saveUserSettings(user.getTenantId(), userId, userSettings);
+        UserSettings userSettings = new UserSettings();
+        userSettings.setSettings(settings);
+        userSettings.setUserId(currentUser.getId());
+        return userSettingsService.updateUserSettings(currentUser.getTenantId(), userSettings).getSettings();
     }
 
     @ApiOperation(value = "Get user settings (getUserSettings)",
             notes = "Fetch the User settings based on the provided User Id. " )
     @PreAuthorize("hasAnyAuthority('SYS_ADMIN', 'TENANT_ADMIN', 'CUSTOMER_USER')")
-    @GetMapping(value = "/user/{userId}/settings")
-    public UserSettings getUserSettings(@ApiParam(value = USER_ID_PARAM_DESCRIPTION)
-                                        @PathVariable(USER_ID) String strUserId) throws ThingsboardException {
-        checkParameter(USER_ID, strUserId);
-
-        UserId userId = new UserId(toUUID(strUserId));
-        User user = checkUserId(userId, Operation.READ);
+    @GetMapping(value = "/user/settings")
+    public JsonNode getUserSettings() throws ThingsboardException {
+        SecurityUser currentUser = getCurrentUser();
 
-        return checkNotNull(userService.findUserSettings(user.getTenantId(), user.getId()), "No user settingd found");
+        UserSettings userSettings = userSettingsService.findUserSettings(currentUser.getTenantId(), currentUser.getId());
+        return userSettings == null ? JacksonUtil.newObjectNode(): userSettings.getSettings();
     }
 
     @ApiOperation(value = "Delete user settings (deleteUserSettings)",
-            notes = "Delete user settings based on the provided User Id. " )
+            notes = "Delete user settings by specifying list of json element xpaths. \n " +
+                    "Example: to delete B and C element in { \"A\": {\"B\": 5}, \"C\": 15} send A.B,C in jsonPaths request parameter" )
     @PreAuthorize("hasAnyAuthority('SYS_ADMIN', 'TENANT_ADMIN', 'CUSTOMER_USER')")
-    @RequestMapping(value = "/user/{userId}/settings", method = RequestMethod.DELETE)
-    public void deleteUserSettings(@ApiParam(value = USER_ID_PARAM_DESCRIPTION)
-                                         @PathVariable(USER_ID) String strUserId) throws ThingsboardException {
-        checkParameter(USER_ID, strUserId);
-
-        UserId userId = new UserId(toUUID(strUserId));
-        User user = checkUserId(userId, Operation.WRITE);
+    @RequestMapping(value = "/user/settings/{jsonPaths}", method = RequestMethod.DELETE)
+    public void deleteUserSettings( @ApiParam(value = JSON_PATHS)
+                                        @PathVariable(JSON_PATHS) String jsonPaths) throws ThingsboardException {
+        checkParameter(USER_ID, jsonPaths);
 
-        userService.deleteUserSettings(user.getTenantId(), userId);
+        SecurityUser currentUser = getCurrentUser();
+        userSettingsService.deleteUserSettings(currentUser.getTenantId(), currentUser.getId(), Arrays.asList(jsonPaths.split(",")));
     }
 }

application/src/main/resources/thingsboard.yml

@@ -457,6 +457,9 @@ cache:
     versionControlTask:
       timeToLiveInMinutes: "${CACHE_SPECS_VERSION_CONTROL_TASK_TTL:5}"
       maxSize: "${CACHE_SPECS_VERSION_CONTROL_TASK_MAX_SIZE:100000}"
+    userSettings:
+      timeToLiveInMinutes: "${CACHE_SPECS_USER_SETTINGS_TTL:1440}"
+      maxSize: "${CACHE_SPECS_USER_SETTINGS_MAX_SIZE:100000}"
 
 #Disable this because it is not required.
 spring.data.redis.repositories.enabled: false

application/src/test/java/org/thingsboard/server/controller/AbstractWebTest.java

@@ -103,6 +103,7 @@ import static org.springframework.test.web.servlet.request.MockMvcRequestBuilder
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.delete;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.put;
 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.header;
 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.request;
@@ -613,6 +614,22 @@ public abstract class AbstractWebTest extends AbstractInMemoryStorageTest {
         return readResponse(doPostAsync(urlTemplate, content, DEFAULT_TIMEOUT, params).andExpect(resultMatcher), responseClass);
     }
 
+    protected <T> T doPut(String urlTemplate, T content, Class<T> responseClass, String... params) {
+        try {
+            return readResponse(doPut(urlTemplate, content, params).andExpect(status().isOk()), responseClass);
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    protected <T> ResultActions doPut(String urlTemplate, T content, String... params) throws Exception {
+        MockHttpServletRequestBuilder postRequest = put(urlTemplate, params);
+        setJwtToken(postRequest);
+        String json = json(content);
+        postRequest.contentType(contentType).content(json);
+        return mockMvc.perform(postRequest);
+    }
+
     protected <T> T doDelete(String urlTemplate, Class<T> responseClass, String... params) throws Exception {
         return readResponse(doDelete(urlTemplate, params).andExpect(status().isOk()), responseClass);
     }

application/src/test/java/org/thingsboard/server/controller/BaseUserControllerTest.java

@@ -745,48 +745,44 @@ public abstract class BaseUserControllerTest extends AbstractControllerTest {
 
     @Test
     public void testSaveUserSettings() throws Exception {
-        loginSysAdmin();
-
-        User user = createUser();
-        User savedUser = doPost("/api/user", user, User.class);
+        loginCustomerUser();
 
-        UserSettings userSettings = createUserSettings();
-        UserSettings savedSettings = doPost("/api/user/" + savedUser.getId() + "/settings", userSettings, UserSettings.class);
-        Assert.assertEquals(savedSettings.getSettings(), savedSettings.getSettings());
+        JsonNode userSettings = mapper.readTree("{\"A\":5, \"B\":10, \"E\":18}");
+        JsonNode savedSettings = doPost("/api/user/settings", userSettings, JsonNode.class);
+        Assert.assertEquals(userSettings, savedSettings);
 
-        UserSettings retrievedSettings = doGet("/api/user/" + savedUser.getId() + "/settings", UserSettings.class);
-        Assert.assertEquals(retrievedSettings.getSettings(), retrievedSettings.getSettings());
-
-        doDelete("/api/user/" + savedUser.getId() + "/settings");
-        doGet("/api/user/" + savedUser.getId() + "/settings").andExpect(status().isNotFound());
-    }
+        JsonNode retrievedSettings = doGet("/api/user/settings", JsonNode.class);
+        Assert.assertEquals(retrievedSettings, userSettings);
+   }
 
     @Test
-    public void testShouldNotSaveSettingsForOtherUser() throws Exception {
-        loginSysAdmin();
+    public void testUpdateUserSettings() throws Exception {
+        loginCustomerUser();
 
-        User user = createUser();
-        User savedUser = doPost("/api/user", user, User.class);
+        JsonNode userSettings = mapper.readTree("{\"A\":5, \"B\":10, \"E\":18}");
+        JsonNode savedSettings = doPost("/api/user/settings", userSettings, JsonNode.class);
+        Assert.assertEquals(userSettings, savedSettings);
 
-        loginCustomerUser();
-        UserSettings userSettings = createUserSettings();
-        doPost("/api/user/" + savedUser.getId() + "/settings", userSettings)
-                .andExpect(status().isForbidden());
+        JsonNode newSettings = mapper.readTree("{\"A\":10, \"B\":10, \"C\":{\"D\": 16}}");
+        JsonNode updatedSettings = doPut("/api/user/settings", newSettings, JsonNode.class);
+
+        JsonNode expectedSettings = mapper.readTree("{\"A\":10, \"B\":10, \"C\":{\"D\": 16}, \"E\":18}");
+        Assert.assertEquals(expectedSettings, updatedSettings);
     }
+
     @Test
-    public void testShouldDeleteSettingsAfterUserDeletion() throws Exception {
-        loginSysAdmin();
+    public void testDeleteUserSettings() throws Exception {
+        loginCustomerUser();
 
-        User user = createUser();
-        User savedUser = doPost("/api/user", user, User.class);
+        JsonNode userSettings = mapper.readTree("{\"A\":10, \"B\":10, \"C\":{\"D\": 16}}");
+        JsonNode savedSettings = doPost("/api/user/settings", userSettings, JsonNode.class);
+        Assert.assertEquals(userSettings, savedSettings);
 
-        UserSettings userSettings = createUserSettings();
-        UserSettings savedSettings = doPost("/api/user/" + savedUser.getId() + "/settings", userSettings, UserSettings.class);
-        Assert.assertEquals(savedSettings.getSettings(), savedSettings.getSettings());
+        doDelete("/api/user/settings/C.D,B");
 
-        doDelete("/api/user/" + savedUser.getId())
-                .andExpect(status().isOk());
-        doGet("/api/user/" + savedUser.getId() + "/settings").andExpect(status().isNotFound());
+        JsonNode retrievedSettings = doGet("/api/user/settings", JsonNode.class);
+        JsonNode expectedSettings = mapper.readTree("{\"A\":10, \"C\":{}}");
+        Assert.assertEquals(expectedSettings, retrievedSettings);
     }
 
     private User createUser() throws Exception {
@@ -800,10 +796,4 @@ public abstract class BaseUserControllerTest extends AbstractControllerTest {
         user.setLastName("Downs");
         return doPost("/api/user", user, User.class);
     }
-
-    private UserSettings createUserSettings() {
-        UserSettings userSettings = new UserSettings();
-        userSettings.setSettings(JacksonUtil.newObjectNode().put("text", StringUtils.randomAlphanumeric(10)));
-        return userSettings;
-    }
 }

common/dao-api/src/main/java/org/thingsboard/server/dao/user/UserService.java

@@ -25,7 +25,6 @@ import org.thingsboard.server.common.data.page.PageData;
 import org.thingsboard.server.common.data.page.PageLink;
 import org.thingsboard.server.common.data.security.UserCredentials;
 import org.thingsboard.server.dao.entity.EntityDaoService;
-import org.thingsboard.server.common.data.security.UserSettings;
 
 public interface UserService extends EntityDaoService {
 	
@@ -75,10 +74,4 @@ public interface UserService extends EntityDaoService {
 
     void setLastLoginTs(TenantId tenantId, UserId userId);
 
-    UserSettings saveUserSettings(TenantId tenantId, UserId userId, UserSettings userSettings);
-
-    UserSettings findUserSettings(TenantId tenantId, UserId userId);
-
-    void deleteUserSettings(TenantId tenantId, UserId userId);
-
 }

common/dao-api/src/main/java/org/thingsboard/server/dao/user/UserSettingsService.java

@@ -0,0 +1,43 @@
+/**
+ * Copyright © 2016-2023 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.dao.user;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.google.common.util.concurrent.ListenableFuture;
+import org.thingsboard.server.common.data.User;
+import org.thingsboard.server.common.data.id.CustomerId;
+import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.common.data.id.UserCredentialsId;
+import org.thingsboard.server.common.data.id.UserId;
+import org.thingsboard.server.common.data.page.PageData;
+import org.thingsboard.server.common.data.page.PageLink;
+import org.thingsboard.server.common.data.security.UserCredentials;
+import org.thingsboard.server.common.data.security.UserSettings;
+import org.thingsboard.server.dao.entity.EntityDaoService;
+
+import java.util.List;
+
+public interface UserSettingsService {
+
+    UserSettings updateUserSettings(TenantId tenantId, UserSettings userSettings);
+
+    UserSettings saveUserSettings(TenantId tenantId, UserSettings userSettings);
+
+    UserSettings findUserSettings(TenantId tenantId, UserId userId);
+
+    void deleteUserSettings(TenantId tenantId, UserId userId, List<String> jsonPaths);
+
+}

common/data/src/main/java/org/thingsboard/server/common/data/CacheConstants.java

@@ -39,4 +39,5 @@ public class CacheConstants {
     public static final String AUTO_COMMIT_SETTINGS_CACHE = "autoCommitSettings";
     public static final String TWO_FA_VERIFICATION_CODES_CACHE = "twoFaVerificationCodes";
     public static final String VERSION_CONTROL_TASK_CACHE = "versionControlTask";
+    public static final String USER_SETTINGS_CACHE = "userSettings";
 }

common/data/src/main/java/org/thingsboard/server/common/data/security/UserSettings.java

@@ -15,6 +15,8 @@
  */
 package org.thingsboard.server.common.data.security;
 
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.JsonNode;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
@@ -23,7 +25,14 @@ import org.thingsboard.server.common.data.id.UserId;
 import org.thingsboard.server.common.data.validation.Length;
 import org.thingsboard.server.common.data.validation.NoXss;
 
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
 import java.io.Serializable;
+import java.util.function.Consumer;
+import java.util.function.Supplier;
+
+import static org.thingsboard.server.common.data.SearchTextBasedWithAdditionalInfo.getJson;
+import static org.thingsboard.server.common.data.SearchTextBasedWithAdditionalInfo.setJson;
 
 @ApiModel
 @Data
@@ -36,7 +45,17 @@ public class UserSettings implements Serializable {
 
     @ApiModelProperty(position = 2, value = "JSON object with user settings.", dataType = "com.fasterxml.jackson.databind.JsonNode")
     @NoXss
-    @Length(fieldName = "settings", max = 10000)
+    @Length(fieldName = "settings", max = 100000)
     private transient JsonNode settings;
 
+    @JsonIgnore
+    private byte[] settingsBytes;
+
+    public JsonNode getSettings() {
+        return getJson(() -> settings, () -> settingsBytes);
+    }
+
+    public void setSettings(JsonNode settings) {
+        setJson(settings, json -> this.settings = json, bytes -> this.settingsBytes = bytes);
+    }
 }

dao/pom.xml

@@ -233,6 +233,10 @@
             <groupId>org.eclipse.leshan</groupId>
             <artifactId>leshan-core</artifactId>
         </dependency>
+        <dependency>
+            <groupId>com.jayway.jsonpath</groupId>
+            <artifactId>json-path</artifactId>
+        </dependency>
     </dependencies>
     <build>
         <plugins>

dao/src/main/java/org/thingsboard/server/dao/entity/AbstractCachedService.java

@@ -0,0 +1,43 @@
+/**
+ * Copyright © 2016-2023 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.dao.entity;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.ApplicationEventPublisher;
+import org.springframework.transaction.support.TransactionSynchronizationManager;
+import org.thingsboard.server.cache.TbTransactionalCache;
+
+import java.io.Serializable;
+
+public abstract class AbstractCachedService<K extends Serializable, V extends Serializable, E> {
+
+    @Autowired
+    protected TbTransactionalCache<K, V> cache;
+
+    @Autowired
+    private ApplicationEventPublisher eventPublisher;
+
+    protected void publishEvictEvent(E event) {
+        if (TransactionSynchronizationManager.isActualTransactionActive()) {
+            eventPublisher.publishEvent(event);
+        } else {
+            handleEvictEvent(event);
+        }
+    }
+
+    public abstract void handleEvictEvent(E event);
+
+}

dao/src/main/java/org/thingsboard/server/dao/user/UserServiceImpl.java

@@ -328,27 +328,6 @@ public class UserServiceImpl extends AbstractEntityService implements UserServic
         return failedLoginAttempts;
     }
 
-    @Override
-    public UserSettings saveUserSettings(TenantId tenantId, UserId userId, UserSettings userSettings) {
-        log.trace("Executing saveUserSettings for user [{}], [{}]", userId, userSettings);
-        validateId(userId, INCORRECT_USER_ID + userId);
-        return userSettingsDao.save(tenantId, userSettings);
-    }
-
-    @Override
-    public UserSettings findUserSettings(TenantId tenantId, UserId userId) {
-        log.trace("Executing findUserSettings for user [{}]", userId);
-        validateId(userId, INCORRECT_USER_ID + userId);
-        return userSettingsDao.findById(tenantId, userId);
-    }
-
-    @Override
-    public void deleteUserSettings(TenantId tenantId, UserId userId) {
-        log.trace("Executing deleteUserSettings for user [{}]", userId);
-        validateId(userId, INCORRECT_USER_ID + userId);
-        userSettingsDao.removeById(tenantId, userId);
-    }
-
     private int increaseFailedLoginAttempts(User user) {
         JsonNode additionalInfo = user.getAdditionalInfo();
         if (!(additionalInfo instanceof ObjectNode)) {

dao/src/main/java/org/thingsboard/server/dao/user/UserSettingsCaffeineCache.java

@@ -0,0 +1,36 @@
+/**
+ * Copyright © 2016-2023 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.dao.user;
+
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.cache.CacheManager;
+import org.springframework.stereotype.Service;
+import org.thingsboard.server.cache.CaffeineTbTransactionalCache;
+import org.thingsboard.server.common.data.CacheConstants;
+import org.thingsboard.server.common.data.asset.Asset;
+import org.thingsboard.server.common.data.id.UserId;
+import org.thingsboard.server.common.data.security.UserSettings;
+import org.thingsboard.server.dao.asset.AssetCacheKey;
+
+@ConditionalOnProperty(prefix = "cache", value = "type", havingValue = "caffeine", matchIfMissing = true)
+@Service("UserSettingsCache")
+public class UserSettingsCaffeineCache extends CaffeineTbTransactionalCache<UserId, UserSettings> {
+
+    public UserSettingsCaffeineCache(CacheManager cacheManager) {
+        super(cacheManager, CacheConstants.USER_SETTINGS_CACHE);
+    }
+
+}

dao/src/main/java/org/thingsboard/server/dao/user/UserSettingsEvictEvent.java

@@ -0,0 +1,24 @@
+/**
+ * Copyright © 2016-2023 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.dao.user;
+
+import lombok.Data;
+import org.thingsboard.server.common.data.id.UserId;
+
+@Data
+public class UserSettingsEvictEvent {
+    private final UserId userId;
+}

dao/src/main/java/org/thingsboard/server/dao/user/UserSettingsRedisCache.java

@@ -0,0 +1,38 @@
+/**
+ * Copyright © 2016-2023 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.dao.user;
+
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.data.redis.connection.RedisConnectionFactory;
+import org.springframework.stereotype.Service;
+import org.thingsboard.server.cache.CacheSpecsMap;
+import org.thingsboard.server.cache.RedisTbTransactionalCache;
+import org.thingsboard.server.cache.TBRedisCacheConfiguration;
+import org.thingsboard.server.cache.TbFSTRedisSerializer;
+import org.thingsboard.server.common.data.CacheConstants;
+import org.thingsboard.server.common.data.asset.Asset;
+import org.thingsboard.server.common.data.id.UserId;
+import org.thingsboard.server.common.data.security.UserSettings;
+import org.thingsboard.server.dao.asset.AssetCacheKey;
+
+@ConditionalOnProperty(prefix = "cache", value = "type", havingValue = "redis")
+@Service("UserSettingsCache")
+public class UserSettingsRedisCache extends RedisTbTransactionalCache<UserId, UserSettings> {
+
+    public UserSettingsRedisCache(TBRedisCacheConfiguration configuration, CacheSpecsMap cacheSpecsMap, RedisConnectionFactory connectionFactory) {
+        super(CacheConstants.USER_SETTINGS_CACHE, cacheSpecsMap, connectionFactory, configuration, new TbFSTRedisSerializer<>());
+    }
+}

dao/src/main/java/org/thingsboard/server/dao/user/UserSettingsServiceImpl.java

@@ -0,0 +1,131 @@
+/**
+ * Copyright © 2016-2023 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.dao.user;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import com.jayway.jsonpath.JsonPath;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.event.TransactionalEventListener;
+import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.common.data.id.UserId;
+import org.thingsboard.server.common.data.security.UserSettings;
+import org.thingsboard.server.dao.entity.AbstractCachedService;
+
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
+import static org.thingsboard.server.dao.service.Validator.validateId;
+
+@Service("UserSettingsDaoService")
+@Slf4j
+@RequiredArgsConstructor
+public class UserSettingsServiceImpl extends AbstractCachedService<UserId, UserSettings, UserSettingsEvictEvent> implements UserSettingsService {
+    public static final String INCORRECT_USER_ID = "Incorrect userId ";
+    private final UserSettingsDao userSettingsDao;
+
+    @Override
+    public UserSettings saveUserSettings(TenantId tenantId, UserSettings userSettings) {
+        log.trace("Executing saveUserSettings for user [{}], [{}]", userSettings.getUserId(), userSettings);
+        validateId(userSettings.getUserId(), INCORRECT_USER_ID + userSettings.getUserId());
+        try {
+            UserSettings saved = userSettingsDao.save(tenantId, userSettings);
+            publishEvictEvent(new UserSettingsEvictEvent(userSettings.getUserId()));
+            return saved;
+        } catch (Exception t) {
+            handleEvictEvent(new UserSettingsEvictEvent(userSettings.getUserId()));
+           throw t;
+        }
+    }
+
+    @Override
+    public UserSettings updateUserSettings(TenantId tenantId, UserSettings userSettings) {
+        log.trace("Executing updateUserSettings for user [{}], [{}]", userSettings.getUserId(), userSettings);
+        validateId(userSettings.getUserId(), INCORRECT_USER_ID + userSettings.getUserId());
+        UserSettings oldSettings = userSettingsDao.findById(tenantId, userSettings.getUserId());
+        userSettings.setSettings(merge(oldSettings.getSettings(), userSettings.getSettings()));
+
+        try {
+            UserSettings saved = userSettingsDao.save(tenantId, userSettings);
+            publishEvictEvent(new UserSettingsEvictEvent(userSettings.getUserId()));
+            return saved;
+        } catch (Exception t) {
+            handleEvictEvent(new UserSettingsEvictEvent(userSettings.getUserId()));
+            throw t;
+        }
+    }
+
+    @Override
+    public UserSettings findUserSettings(TenantId tenantId, UserId userId) {
+        log.trace("Executing findUserSettings for user [{}]", userId);
+        validateId(userId, INCORRECT_USER_ID + userId);
+
+        return cache.getAndPutInTransaction(userId,
+                () -> userSettingsDao.findById(tenantId, userId), true);
+    }
+
+    @Override
+    public void deleteUserSettings(TenantId tenantId, UserId userId, List<String> jsonPaths)  {
+        log.trace("Executing deleteUserSettings for user [{}]", userId);
+        validateId(userId, INCORRECT_USER_ID + userId);
+        UserSettings userSettings = userSettingsDao.findById(tenantId, userId);
+        ObjectNode settings = (ObjectNode) userSettings.getSettings();
+
+        try {
+            for (String s : jsonPaths) {
+                settings = new ObjectMapper().readValue(JsonPath.parse(settings.toString()).delete("$." + s).jsonString(), ObjectNode.class);
+                userSettings.setSettings(settings);
+            }
+            userSettingsDao.save(tenantId, userSettings);
+            publishEvictEvent(new UserSettingsEvictEvent(userSettings.getUserId()));
+        } catch (Exception t) {
+            handleEvictEvent(new UserSettingsEvictEvent(userSettings.getUserId()));
+            throw new RuntimeException(t);
+        }
+    }
+
+    @TransactionalEventListener(classes = UserSettingsEvictEvent.class)
+    @Override
+    public void handleEvictEvent(UserSettingsEvictEvent event) {
+        List<UserId> keys = new ArrayList<>();
+        keys.add(event.getUserId());
+        cache.evict(keys);
+    }
+
+    public JsonNode merge(JsonNode mainNode, JsonNode updateNode) {
+
+        Iterator<String> fieldNames = updateNode.fieldNames();
+        while (fieldNames.hasNext()) {
+            String fieldName = fieldNames.next();
+            JsonNode jsonNode = mainNode.get(fieldName);
+            if (jsonNode != null && jsonNode.isObject()) {
+                merge(jsonNode, updateNode.get(fieldName));
+            }
+            else {
+                if (mainNode instanceof ObjectNode) {
+                    JsonNode value = updateNode.get(fieldName);
+                    ((ObjectNode) mainNode).set(fieldName, value);
+                }
+            }
+        }
+        return mainNode;
+    }
+
+}

dao/src/test/java/org/thingsboard/server/dao/service/BaseUserServiceTest.java

@@ -72,7 +72,6 @@ public abstract class BaseUserServiceTest extends AbstractServiceTest {
         customerUser = userService.saveUser(customerUser);
 
         userSettings = createUserSettings(customerUser.getId());
-        userSettings = userService.saveUserSettings(TenantId.SYS_TENANT_ID, customerUser.getId(), userSettings);
     }
 
     @After
@@ -112,14 +111,6 @@ public abstract class BaseUserServiceTest extends AbstractServiceTest {
         Assert.assertNotNull(userCredentials);
     }
 
-    @Test
-    public void testFindUserSettings() {
-        User user = userService.findUserByEmail(SYSTEM_TENANT_ID,"customer@thingsboard.org");
-        Assert.assertNotNull(user);
-        UserSettings userSettings = userService.findUserSettings(SYSTEM_TENANT_ID, user.getId());
-        Assert.assertEquals(userSettings.getSettings(), userSettings.getSettings());
-    }
-
     @Test
     public void testSaveUser() {
         User tenantAdminUser = userService.findUserByEmail(SYSTEM_TENANT_ID,"tenant@thingsboard.org");