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fix: wire DB pool sizing via env (DATABASE_POOL_MIN/MAX, timeouts) #583

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fix: wire DB pool sizing via env (DATABASE_POOL_MIN/MAX, timeouts) #583

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7 changes: 7 additions & 0 deletions app/backend/.env.example
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,13 @@ DB_USER=postgres
DB_PASS=postgres
DB_NAME=gatherraa

# Connection pool tuning (defaults are conservative; tune for your workload)
DATABASE_POOL_MIN=2 # Minimum idle connections
DATABASE_POOL_MAX=10 # Maximum pool size
IDLE_TIMEOUT_MS=30000 # Close idle connections after this many ms
STATEMENT_TIMEOUT_MS=5000 # Connection acquisition timeout in ms
MAX_LIFETIME_MS=3600000 # Max connection lifetime in ms (1 hour)

# ── Redis ────────────────────────────────────────────────────────────────────
REDIS_URL=redis://localhost:6379
REDIS_HOST=localhost
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25 changes: 18 additions & 7 deletions app/backend/src/app.module.ts
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
import { Module, NestModule, MiddlewareConsumer } from '@nestjs/common';
import { ConfigModule } from '@nestjs/config';
import { ConfigModule, ConfigService } from '@nestjs/config';
import { ScheduleModule } from '@nestjs/schedule';
import { TypeOrmModule } from '@nestjs/typeorm';

Expand All @@ -16,12 +16,23 @@ import { VerificationHistory } from './identity-verification/entities/verificati
ConfigModule.forRoot({
isGlobal: true,
}),
TypeOrmModule.forRoot({
type: 'sqlite',
database: ':memory:',
entities: [IdentityVerification, VerificationHistory],
synchronize: true,
retryAttempts: 0,
TypeOrmModule.forRootAsync({
inject: [ConfigService],
useFactory: (config: ConfigService) => ({
type: 'sqlite',
database: config.get<string>('DATABASE_PATH', ':memory:'),
entities: [IdentityVerification, VerificationHistory],
synchronize: true,
retryAttempts: 0,
// Pool sizing — defaults are conservative but tunable via env
extra: {
min: config.get<number>('DATABASE_POOL_MIN', 2),
max: config.get<number>('DATABASE_POOL_MAX', 10),
idleTimeoutMillis: config.get<number>('IDLE_TIMEOUT_MS', 30_000),
connectionTimeoutMillis: config.get<number>('STATEMENT_TIMEOUT_MS', 5_000),
maxLifetimeSeconds: config.get<number>('MAX_LIFETIME_MS', 3_600_000) / 1000,
},
}),
}),
ScheduleModule.forRoot(),
IdentityVerificationModule,
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