feat: added throttling of requests

package.json

@@ -34,6 +34,7 @@
     "@nestjs/platform-express": "^9.1.6",
     "@nestjs/swagger": "^6.1.2",
     "@nestjs/terminus": "^9.1.4",
+    "@nestjs/throttler": "^6.2.1",
     "cache-manager": "^5.7.6",
     "class-transformer": "^0.5.1",
     "class-validator": "^0.13.2",

src/app.module.ts

@@ -9,6 +9,8 @@ import { ConfigService } from './config/config/config.service';
 import { LoggerModule } from 'nestjs-pino';
 import { v4 as uuidv4 } from 'uuid';
 import { CachingModule } from './caching/caching.module';
+import { ThrottlerGuard, ThrottlerModule } from '@nestjs/throttler';
+import { APP_GUARD } from '@nestjs/core';
 
 @Module({
   imports: [
@@ -43,6 +45,22 @@ import { CachingModule } from './caching/caching.module';
       },
     }),
     CachingModule,
+    ThrottlerModule.forRootAsync({
+      imports: [ConfigModule],
+      inject: [ConfigService],
+      useFactory: (config: ConfigService) => [
+        {
+          ttl: config.get('throttle.ttl'),
+          limit: config.get('throttle.limit'),
+        },
+      ],
+    }),
+  ],
+  providers: [
+    {
+      provide: APP_GUARD,
+      useClass: ThrottlerGuard,
+    },
   ],
 })
 export class AppModule implements NestModule {

src/config/schema/config.schema.ts

@@ -86,7 +86,7 @@ export const schema: convict.Schema<AppConfig> = {
   },
   cache: {
     ttl: {
-      doc: 'TTL in miliseconds for caching the results',
+      doc: 'TTL in milliseconds for caching the results',
       format: 'Number',
       default: 5000,
       env: 'CACHE_TTL',
@@ -100,4 +100,20 @@ export const schema: convict.Schema<AppConfig> = {
       arg: 'cache_max_entries',
     },
   },
+  throttle: {
+    ttl: {
+      doc: 'TTL in milliseconds for throttling the requests',
+      format: 'Number',
+      default: 60000,
+      env: 'THROTTLE_TTL',
+      arg: 'throttle_ttl',
+    },
+    limit: {
+      doc: 'Limit for throttling the requests',
+      format: 'Number',
+      default: 1000,
+      env: 'THROTTLE_LIMIT',
+      arg: 'throttle_limit',
+    },
+  },
 };

src/jobs/controllers/jobs/jobs.controller.ts

@@ -14,6 +14,7 @@ import { ApiBody, ApiOperation } from '@nestjs/swagger';
 import { Job, PatchJob } from '../../models/job.dto';
 import { DatabaseService } from '../../services/database/database.service';
 import { CachingService } from '../../../caching/services/cache.service';
+import { Throttle } from '@nestjs/throttler';
 
 @Controller('jobs')
 export class JobsController {

src/jobs/jobs.module.ts

@@ -5,6 +5,7 @@ import { ConfigModule } from '../config/config.module';
 import { ConfigService } from '../config/config/config.service';
 import { DatabaseService } from './services/database/database.service';
 import { CachingModule } from '../caching/caching.module';
+import { ThrottlerModule } from '@nestjs/throttler';
 
 @Module({
   controllers: [JobsController],