chore: move cache size to env var

Author: soedirgo

src/server/constants.ts

@@ -25,5 +25,6 @@ export const GENERATE_TYPES =
 export const GENERATE_TYPES_INCLUDED_SCHEMAS =
   GENERATE_TYPES && process.argv[5] === '--include-schemas' ? process.argv[6]?.split(',') ?? [] : []
 
+export const CONNECTIONS_CACHE_SIZE = Number(process.env.PG_META_CONNECTIONS_CACHE_SIZE || '100')
 export const DEFAULT_POOL_CONFIG = { max: 1, connectionTimeoutMillis: PG_CONN_TIMEOUT_SECS * 1000 }
 export const PG_META_REQ_HEADER = process.env.PG_META_REQ_HEADER || 'request-id'

src/server/pgMetaCache.ts

@@ -1,9 +1,9 @@
 import LruCache from 'lru-cache'
 import PostgresMeta from '../lib/PostgresMeta.js'
-import { DEFAULT_POOL_CONFIG } from './constants.js'
+import { CONNECTIONS_CACHE_SIZE, DEFAULT_POOL_CONFIG } from './constants.js'
 
 const cache = new LruCache<string, PostgresMeta>({
-  max: 100,
+  max: CONNECTIONS_CACHE_SIZE,
   dispose: async (value) => {
     await value.end()
   },