Wasp•2d ago

Server 500 response Timed out fetching a new connection from the connection pool.

2025-01-26T09:07:40.152 app[d890426c46e328] ams [info] POST /operations/get-tracked-product-stats 500 10027.476 ms - 148 2025-01-26T09:07:40.198 app[d890426c46e328] ams [info] PrismaClientKnownRequestError: 2025-01-26T09:07:40.198 app[d890426c46e328] ams [info] Invalid prisma.salesData.findMany() invocation: 2025-01-26T09:07:40.198 app[d890426c46e328] ams [info] Timed out fetching a new connection from the connection pool. More info: http://pris.ly/d/connection-pool (Current connection pool timeout: 10, connection limit: 3) 2025-01-26T09:07:40.198 app[d890426c46e328] ams [info] at Ln.handleRequestError (/app/node_modules/@prisma/client/runtime/library.js:121:7753) 2025-01-26T09:07:40.198 app[d890426c46e328] ams [info] at Ln.handleAndLogRequestError (/app/node_modules/@prisma/client/runtime/library.js:121:7061) 2025-01-26T09:07:40.198 app[d890426c46e328] ams [info] at Ln.request (/app/node_modules/@prisma/client/runtime/library.js:121:6745) 2025-01-26T09:07:40.198 app[d890426c46e328] ams [info] at async l (/app/node_modules/@prisma/client/runtime/library.js:130:9633) 2025-01-26T09:07:40.198 app[d890426c46e328] ams [info] at <anonymous> (/app/src/actions/.ts:70:25) 2025-01-26T09:07:40.198 app[d890426c46e328] ams [info] at async Promise.all (index 27) 2025-01-26T09:07:40.198 app[d890426c46e328] ams [info] at $2 (/app/src/actions/.ts:68:17) 2025-01-26T09:07:40.198 app[d890426c46e328] ams [info] at <anonymous> (/app/.wasp/build/server/src/middleware/operations.ts:14:24) 2025-01-26T09:07:40.198 app[d890426c46e328] ams [info] at <anonymous> (/app/.wasp/out/sdk/wasp/server/utils.ts:26:5)

Connection pool | Prisma Documentation

Prisma ORM's query engine creates a connection pool to store and manage database connections.

2 Replies

kapa.ai•2d ago

Hi @Sven. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- Based on the error message you've provided, it appears you're encountering a database connection issue in your Wasp application. This is a common problem that can occur when the database connection pool is exhausted or when there are network issues. Let's break down the error and provide some potential solutions. The key part of the error message is:

Timed out fetching a new connection from the connection pool. More info: <http://pris.ly/d/connection-pool> (Current connection pool timeout: 10, connection limit: 3)

Timed out fetching a new connection from the connection pool. More info: <http://pris.ly/d/connection-pool> (Current connection pool timeout: 10, connection limit: 3)

This indicates that Prisma, which Wasp uses for database operations, was unable to establish a new connection within the specified timeout period. The connection pool is limited to 3 connections, and the timeout is set to 10 seconds. Here are some steps you can take to address this issue: 1. Increase connection pool size: You may need to increase the number of connections in your pool. This can be done by modifying your Prisma configuration. However, in Wasp, you typically don't directly modify the Prisma configuration. 2. Optimize database queries: Review your database queries, especially in the getTrackedProductStats operation, to ensure they're efficient and not holding connections open for too long. 3. Check database load: Ensure your database isn't overloaded. If it's struggling to handle the current load, you might need to scale up your database resources. 4. Implement retry logic: For operations that might fail due to connection issues, you can implement retry logic. Wasp provides error handling capabilities for this purpose. 5. Use HttpError for better error handling: As mentioned in the Wasp documentation on error handling, you can use HttpError to provide more meaningful error messages to the client. For example:

   import { HttpError } from 'wasp/server'

   export const getTrackedProductStats = async (args, context) => {
     try {
       // Your database operation here
     } catch (error) {
       throw new HttpError(
         500,
         "Database connection error",
         { details: error.message }
       )
     }
   }

   import { HttpError } from 'wasp/server'

   export const getTrackedProductStats = async (args, context) => {
     try {
       // Your database operation here
     } catch (error) {
       throw new HttpError(
         500,
         "Database connection error",
         { details: error.message }
       )
     }
   }

6. Check your deployment environment: If you're deploying on a platform like Fly.io, make sure your database is properly attached to your application. There have been issues reported where database attachment failed during deployment. 7. Monitor and log errors: Implement proper logging in your application to help diagnose these issues more easily in the future. If the problem persists after trying these solutions, you may need to dive deeper into your specific application setup and database configuration. The Wasp community on Discord or GitHub issues might be able to provide more tailored advice if you can share more details about your application structure and deployment environment. Remember, when dealing with database connection issues, it's important to balance between having enough connections to handle your application's needs and not overwhelming your database server with too many open connections. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @Sven, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?

SvenOP•2d ago

anyone know how i can use fly and increase the connection amount? @ me

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Server 500 response Timed out fetching a new connection from the connection pool.

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