feat: add memory cache to boost performance (#2620)

* feat: add memory cache to boost performance

* fix: tests

* fix: logging

* fix: missing commented stuff

server/src/workspace/workspace-migration-runner/events/workspace-migration-applied.event.ts

@@ -0,0 +1,11 @@
+export class WorkspaceMigrationAppliedEvent {
+  private readonly _workspaceId: string;
+
+  constructor(worskapceId: string) {
+    this._workspaceId = worskapceId;
+  }
+
+  get workspaceId(): string {
+    return this._workspaceId;
+  }
+}

server/src/workspace/workspace-migration-runner/events/workspace-migration-events.ts

@@ -0,0 +1,3 @@
+export enum WorkspaceMigrationEvents {
+  MigrationApplied = '@workspace/migration-applied',
+}

server/src/workspace/workspace-migration-runner/workspace-migration-runner.service.ts

@@ -1,4 +1,5 @@
 import { Injectable } from '@nestjs/common';
+import { EventEmitter2 } from '@nestjs/event-emitter';
 
 import {
   QueryRunner,
@@ -17,6 +18,8 @@ import {
   WorkspaceMigrationColumnCreate,
   WorkspaceMigrationColumnRelation,
 } from 'src/metadata/workspace-migration/workspace-migration.entity';
+import { WorkspaceMigrationEvents } from 'src/workspace/workspace-migration-runner/events/workspace-migration-events';
+import { WorkspaceMigrationAppliedEvent } from 'src/workspace/workspace-migration-runner/events/workspace-migration-applied.event';
 
 import { customTableDefaultColumns } from './utils/custom-table-default-column.util';
 
@@ -25,6 +28,7 @@ export class WorkspaceMigrationRunnerService {
   constructor(
     private readonly workspaceDataSourceService: WorkspaceDataSourceService,
     private readonly workspaceMigrationService: WorkspaceMigrationService,
+    private readonly eventEmitter: EventEmitter2,
   ) {}
 
   /**
@@ -78,6 +82,12 @@ export class WorkspaceMigrationRunnerService {
 
     await queryRunner.release();
 
+    // Emit event when migration is applied
+    this.eventEmitter.emit(
+      WorkspaceMigrationEvents.MigrationApplied,
+      new WorkspaceMigrationAppliedEvent(workspaceId),
+    );
+
     return flattenedPendingMigrations;
   }