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

src/query/function/function.controller.ts

@@ -0,0 +1,22 @@
+import { Controller, Inject, Post, UseGuards } from "@nestjs/common";
+import { ApiTokenGuard } from "src/api/guards/api-token.guard";
+import { FunctionService } from "./function.service";
+
+@Controller("functions")
+@UseGuards(ApiTokenGuard)
+export class FunctionController {
+  constructor(
+    @Inject(FunctionService)
+    private readonly functionService: FunctionService
+  ) {}
+
+  @Post("create")
+  async createFunction(projectId: string, name: string, source: string) {
+    return this.functionService.create(projectId, name, source);
+  }
+
+  @Post("delete")
+  async deleteFunction(projectId: string, name: string) {
+    return this.functionService.deleteFunction(projectId, name);
+  }
+}