fix: limit prisma connections

Author: chedieck

prisma-local/clientInstance.ts

@@ -2,16 +2,24 @@ import { PrismaClient } from '@prisma/client'
 
 let prisma: PrismaClient
 
+const CONNECTION_LIMIT = 20
+
+function buildDatasourceUrl (): string {
+  const baseUrl = process.env.DATABASE_URL ?? ''
+  const separator = baseUrl.includes('?') ? '&' : '?'
+  return `${baseUrl}${separator}connection_limit=${CONNECTION_LIMIT}`
+}
+
 interface CustomNodeJsGlobal extends NodeJS.Global {
   prisma: PrismaClient
 }
 declare const global: CustomNodeJsGlobal
 
 if (process.env.NODE_ENV === 'production') {
-  prisma = new PrismaClient()
+  prisma = new PrismaClient({ datasources: { db: { url: buildDatasourceUrl() } } })
 } else {
   if (global.prisma === undefined) {
-    global.prisma = new PrismaClient()
+    global.prisma = new PrismaClient({ datasources: { db: { url: buildDatasourceUrl() } } })
   }
 
   prisma = global.prisma