全项目数据库性能优化

apps/backend/src/config/defaults.ts

@@ -22,7 +22,10 @@ export function createDefaultRuntimeConfig(projectRoot: string): RuntimeConfig {
     database: {
       url: 'postgres://postgres:postgres@127.0.0.1:5432/order_site',
       ssl: false,
-      maxConnections: 10,
+      maxConnections: 8,
+      idleTimeoutMs: 30_000,
+      connectionTimeoutMs: 5_000,
+      statementTimeoutMs: 15_000,
     },
 
     storage: {

apps/backend/src/config/env-overrides.ts

@@ -35,6 +35,9 @@ export const ENV_OVERRIDES: readonly EnvOverride[] = [
   stringEnv('DATABASE_URL', ['database', 'url']),
   booleanEnv('DATABASE_SSL', ['database', 'ssl']),
   integerEnv('DATABASE_MAX_CONNECTIONS', ['database', 'maxConnections']),
+  integerEnv('DATABASE_IDLE_TIMEOUT_MS', ['database', 'idleTimeoutMs']),
+  integerEnv('DATABASE_CONNECTION_TIMEOUT_MS', ['database', 'connectionTimeoutMs']),
+  integerEnv('DATABASE_STATEMENT_TIMEOUT_MS', ['database', 'statementTimeoutMs']),
   stringEnv('STORAGE_ENDPOINT', ['storage', 'endpoint']),
   stringEnv('STORAGE_BUCKET', ['storage', 'bucket']),
   stringEnv('STORAGE_ACCESS_KEY_ID', ['storage', 'accessKeyId']),

apps/backend/src/config/runtime-validation.ts

@@ -45,6 +45,23 @@ export function validateRuntimeConfig(
 
   requireInteger(issues, 'server.port', config.server?.port, { min: 1, max: 65535 })
   requireInteger(issues, 'database.maxConnections', config.database?.maxConnections, { min: 1 })
+  requireOptionalInteger(issues, 'database.idleTimeoutMs', config.database?.idleTimeoutMs, {
+    min: 1,
+  })
+  requireOptionalInteger(
+    issues,
+    'database.connectionTimeoutMs',
+    config.database?.connectionTimeoutMs,
+    { min: 1 },
+  )
+  requireOptionalInteger(
+    issues,
+    'database.statementTimeoutMs',
+    config.database?.statementTimeoutMs,
+    {
+      min: 1,
+    },
+  )
   requireInteger(issues, 'storage.maxUploadSizeMb', config.storage?.maxUploadSizeMb, {
     min: 1,
     max: 100,
@@ -253,6 +270,18 @@ function requireInteger(
   }
 }
 
+function requireOptionalInteger(
+  issues: RuntimeConfigValidationIssue[],
+  configPath: string,
+  value: unknown,
+  options: { min?: number; max?: number } = {},
+): void {
+  if (value === undefined || value === null || value === '') {
+    return
+  }
+  requireInteger(issues, configPath, value, options)
+}
+
 function isHttpUrl(value: string): boolean {
   try {
     const url = new URL(value)