feat(deploy): production deployment setup and fixes

- Debian-based api image (bookworm-slim), docker/debian mirrors, prisma
  binaryTargets for openssl 3.0
- nginx: admin SPA under /admin, TLS via acme.sh (ZeroSSL) + auto-renewal
  cron, http->https redirect
- prisma: add origin_goods.delisted migration, sync missing schema
  (good_image/tag_font_color/good_tags), fix users.createdAt Timestamptz
- api: CORS wildcard reflection, helmet CORP cross-origin, price
  backfill in persistProductDetail, categoryIcon ancestor fallback,
  mediaByColor per-color gallery in public goods detail
- admin: /admin base path (vite + router)
- import-data.mjs: udt_name casting, serial sequence advance fix
This commit is contained in:
yeuimu
2026-08-26 14:23:09 +08:00
parent be0b90e68f
commit 6c61a4e871
982 changed files with 74156 additions and 179393 deletions
@@ -1,94 +0,0 @@
---
title: Understand Provider Scopes
impact: CRITICAL
impactDescription: Prevents data leaks and performance issues
tags: dependency-injection, scopes, request-context
---
## Understand Provider Scopes
NestJS has three provider scopes: DEFAULT (singleton), REQUEST (per-request instance), and TRANSIENT (new instance for each injection). Most providers should be singletons. Request-scoped providers have performance implications as they bubble up through the dependency tree. Understanding scopes prevents memory leaks and incorrect data sharing.
**Incorrect (wrong scope usage):**
```typescript
// Request-scoped when not needed (performance hit)
@Injectable({ scope: Scope.REQUEST })
export class UsersService {
// This creates a new instance for EVERY request
// All dependencies also become request-scoped
async findAll() {
return this.userRepo.find();
}
}
// Singleton with mutable request state
@Injectable() // Default: singleton
export class RequestContextService {
private userId: string; // DANGER: Shared across all requests!
setUser(userId: string) {
this.userId = userId; // Overwrites for all concurrent requests
}
getUser() {
return this.userId; // Returns wrong user!
}
}
```
**Correct (appropriate scope for each use case):**
```typescript
// Singleton for stateless services (default, most common)
@Injectable()
export class UsersService {
constructor(private readonly userRepo: UserRepository) {}
async findById(id: string): Promise<User> {
return this.userRepo.findOne({ where: { id } });
}
}
// Request-scoped ONLY when you need request context
@Injectable({ scope: Scope.REQUEST })
export class RequestContextService {
private userId: string;
setUser(userId: string) {
this.userId = userId;
}
getUser(): string {
return this.userId;
}
}
// Better: Use NestJS built-in request context
import { REQUEST } from '@nestjs/core';
import { Request } from 'express';
@Injectable({ scope: Scope.REQUEST })
export class AuditService {
constructor(@Inject(REQUEST) private request: Request) {}
log(action: string) {
console.log(`User ${this.request.user?.id} performed ${action}`);
}
}
// Best: Use ClsModule for async context (no scope bubble-up)
import { ClsService } from 'nestjs-cls';
@Injectable() // Stays singleton!
export class AuditService {
constructor(private cls: ClsService) {}
log(action: string) {
const userId = this.cls.get('userId');
console.log(`User ${userId} performed ${action}`);
}
}
```
Reference: [NestJS Injection Scopes](https://docs.nestjs.com/fundamentals/injection-scopes)