feat(microservices): add redis client info tag with auto version

Author: vchomakov

packages/microservices/client/client-redis.ts

@@ -93,7 +93,11 @@ export class ClientRedis extends ClientProxy<RedisEvents, RedisStatus> {
       host: REDIS_DEFAULT_HOST,
       port: REDIS_DEFAULT_PORT,
       ...this.getClientOptions(),
-      clientInfoTag: this.getClientInfoTag(),
+      clientInfoTag: this.getOptionsProp(
+        this.options,
+        'clientInfoTag',
+        this.getClientInfoTag(),
+      ),
       lazyConnect: true,
     });
   }

packages/microservices/external/redis.interface.ts

@@ -35,6 +35,14 @@ export interface IORedisOptions {
    */
   connectionName?: string;
 
+  /**
+   * Set a tag to identify the framework using the Redis client library.
+   * This is appended to the library name (e.g., "ioredis(nestjs_v11.0.0)").
+   * @link https://redis.io/docs/latest/commands/client-setinfo/
+   * @default "nestjs_v{version}" (e.g., "nestjs_v11.0.0")
+   */
+  clientInfoTag?: string;
+
   /**
    * If set, client will send AUTH command with the value of this option as the first argument when connected.
    * This is supported since Redis 6.

packages/microservices/server/server-redis.ts

@@ -116,7 +116,11 @@ export class ServerRedis extends Server<RedisEvents, RedisStatus> {
       port: REDIS_DEFAULT_PORT,
       host: REDIS_DEFAULT_HOST,
       ...this.getClientOptions(),
-      clientInfoTag: this.getClientInfoTag(),
+      clientInfoTag: this.getOptionsProp(
+        this.options,
+        'clientInfoTag',
+        this.getClientInfoTag(),
+      ),
       lazyConnect: true,
     });
   }

packages/microservices/test/client/client-redis.spec.ts

@@ -390,6 +390,23 @@ describe('ClientRedis', () => {
       );
     });
   });
+
+  describe('createClient', () => {
+    it('should use default clientInfoTag when not provided', () => {
+      const clientWithoutTag = new ClientRedis({});
+      const redisClient = clientWithoutTag.createClient();
+
+      expect(redisClient).to.be.ok;
+    });
+
+    it('should use custom clientInfoTag when provided', () => {
+      const clientWithTag = new ClientRedis({ clientInfoTag: 'my-app' });
+      const redisClient = clientWithTag.createClient();
+
+      expect(redisClient).to.be.ok;
+    });
+  });
+
   describe('getClientInfoTag', () => {
     it('should return nestjs version tag when package.json is available', () => {
       const result = client['getClientInfoTag']();

packages/microservices/test/server/server-redis.spec.ts

@@ -289,6 +289,23 @@ describe('ServerRedis', () => {
       expect(handler.calledWith(data)).to.be.true;
     });
   });
+
+  describe('createRedisClient', () => {
+    it('should use default clientInfoTag when not provided', () => {
+      const serverWithoutTag = new ServerRedis({});
+      const redisClient = serverWithoutTag.createRedisClient();
+
+      expect(redisClient).to.be.ok;
+    });
+
+    it('should use custom clientInfoTag when provided', () => {
+      const serverWithTag = new ServerRedis({ clientInfoTag: 'my-app' });
+      const redisClient = serverWithTag.createRedisClient();
+
+      expect(redisClient).to.be.ok;
+    });
+  });
+
   describe('getClientInfoTag', () => {
     it('should return nestjs version tag when package.json is available', () => {
       const result = server['getClientInfoTag']();