feat: enhance API and query handling with Redis caching; add QueryGuard for query validation; refactor services to utilize RedisClient for improved performance

src/query/handler/query.handler.service.ts

@@ -3,6 +3,7 @@ import { Repository } from "typeorm";
 import { Query } from "../entities/query.entity";
 import { InjectRepository } from "@nestjs/typeorm";
 import { ProjectService } from "src/project/project.service";
+import { RedisClient } from "src/redis/redis.service";
 
 @Injectable()
 export class QueryHandlerService {
@@ -10,7 +11,9 @@ export class QueryHandlerService {
     @InjectRepository(Query)
     private readonly queryRepository: Repository<Query>,
     @Inject(ProjectService)
-    private readonly projectService: ProjectService
+    private readonly projectService: ProjectService,
+    @Inject(RedisClient)
+    private readonly redisClient: RedisClient
   ) {}
 
   async createQuery(
@@ -34,6 +37,25 @@ export class QueryHandlerService {
     return query;
   }
 
+  async getQueryById(id: string) {
+    const cached = await this.redisClient.get(`query_${id}`);
+
+    if (cached) {
+      return cached;
+    }
+
+    const query = await this.queryRepository.findOne({
+      where: { id },
+      relations: ["project"],
+    });
+
+    if (query) {
+      await this.redisClient.set(`query_${id}`, query, 300);
+    }
+
+    return query;
+  }
+
   async updateQuery(id: string, updateData: Partial<Query>) {
     const query = await this.queryRepository.findOne({ where: { id } });
 
@@ -41,6 +63,8 @@ export class QueryHandlerService {
       throw new Error("Query not found");
     }
 
+    await this.redisClient.del(`query_${id}`);
+
     Object.assign(query, updateData);
     return this.queryRepository.save(query);
   }