prisma-connection-pool-exhaustion

Serverless platforms like AWS Lambda spawn new Prisma clients per cold start, which opens multiple database connections and exhausts the connection pool, causing P2024 errors and timeouts.

Fix P2024 errors by using a pooled connection string with PgBouncer, appending connection_limit=1 to your datasource URL, and implementing a PrismaClient singleton to prevent new clients per invocation.

Managed PostgreSQL providers like Supabase and Neon require a connection pooler like PgBouncer to cap concurrent connections and prevent Prisma pool exhaustion in serverless Node.js environments.

Implement a PrismaClient singleton by assigning the client to a global variable outside the serverless function handler, preventing new client instantiation during hot reloads and cold starts.

The best way to limit connections is combining a PgBouncer pooled datasource URL with connection_limit=1 parameters and a PrismaClient singleton to effectively cap concurrent database connections.

Prisma connection pooling works with MySQL serverless deployments by configuring datasource URL connection limits and implementing a PrismaClient singleton to prevent pool exhaustion on platforms like Netlify Functions.