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Graph/wrong-pooler-routing

AntiPattern

Wrong Pooler Connection

wrong-pooler-routing

Database connection routing fails because Prisma/Supabase are pointed at the wrong pooler host or port (e.g., Supavisor vs pooler hostname/port), so auth and tenant context are resolved incorrectly and requests intermittently break.

Node Details

Public graph metadata

Updated7/28/2026

Connections

30 linked nodes

MATCHESSolution

explicitly configuring Prisma to generate the client binaries to a custom output directory `node_modules/prisma-client` — // prisma/schema.prisma generator client { provider = "prisma-client-js". Tension: Then doing a search-and-replace of the import statements, replacing `from '@prisma/client'` with `from 'prisma-client'`. Outcome: output = "../node_modules/prisma-client".

MATCHESSolution

Ensure that "libquery_engine-rhel-openssl-3.0.x.so.node" has been copied next to the bundle or in "generated/prisma" — We detected that you are using Next.js. Tension: This is likely caused by a bundler that has not copied "libquery_engine-rhel-openssl-3.0.x.so.node" next to the resulting bundle. Outcome: I made some progress. So I created another page at /prisma-check and it has.

MATCHESSolution

How to fix this issue — Next.js project deployed on Vercel. Tension: SQLite is incompatible with serverless environments. Outcome: Consider cloud databases like Postgres Neon, Turso, or Vercel Postgres.

MATCHESSolution

Choose very strong username/password — securely connect my Vercel app to Azure SQL Database. Tension: it does not mitigate the problem.

MATCHESSolution

override Build command to `npx prisma generate && next build` — under Build & Development Settings. Tension: API route failed. Outcome: Redeploy the app.

MATCHESSolution

In next.config.js. Outcome: allowedOrigins: [ 'localhost:3000', // localhost 'foobar-3000.app.github.dev', // Codespaces ].

MATCHESSolution

Update your your code to change the redirect URL. — supabase.auth.signInWithOAuth({ provider: 'google', options: { redirectTo: `https://app.darpo.in`, } });. Tension: Add your domain to the allowed URLs list on `supabase` dashboard. Outcome: navigate to `authentication->URL configuration`. add entry in the `Redirect URLs` section.

MATCHESSolution

Add directUrl to the Prisma schema, set a pooled Supabase connection string with ?pgbouncer=true for DATABASE_URL, and use the primary postgres URL for DIRECT_URL

MATCHESSolution

Changing it to `postgresql+asyncpg://` solved the error — In the `.env` file. Tension: `DB_ASYNC_TEST_CONNECTION_STR="postgresql://postgres:pass/db_tests" `. Outcome: Changing it to `postgresql+asyncpg://` solved the error.

MATCHESSolution

Move the dependency definitions (e.g., `get_database`, `get_db_connection`) into a separate module (e.g., `dependencies.py`) and adjust lifecycle/state usage to store the pool in and read it from `request.state` instead of `app.state` (optionally returning the pool from the lifespan context).

MATCHESSolution

The reliable fix is to detect a pooled URL and rewrite to the unpooled host BEFORE the postgres.js client is initialized — For backfill / admin scripts (Drizzle paths). Tension: postgres.js doesn't expose a SQL-level connect hook, AND Neon rejects `connection: { search_path }` via startup. Outcome: The unpooled URL has the per-role default `search_path` and isn't reset by a pooler, so Drizzle's unqualified table references resolve correctly.

MATCHESSolution

adding attribute.repository -> assertion.repository mapping to my pool provider did the trick — in the console. Tension: my provider didn't have the mapping configured for attribute.repository. Outcome: adding attribute.repository -> assertion.repository mapping to my pool provider did the trick.

MATCHESSolution

Replace supabase db start With supabase start — I have a vitest suite I'm trying to run in a GitHub workflow. Outcome: To fix this:.

MATCHESSolution

keep a singleton client and configure a connection pool using `https.Agent` — Instead of creating a new S3Client on every request. Tension: prevents socket reuse. Outcome: Keeps sockets alive for reuse under high concurrency.

MATCHESSolution

db is running — likely prisma is not correctly connecting to db. Tension: schema is up to date: `npx prisma migrate`. Outcome: make sure: db is running schema is up to date: `npx prisma migrate`.

MATCHESSolution

Add the following to your `.env` — This is a bug with Sequlize I would recommend opening a new issue. Outcome: DATABASE_URL=postgres://user:pass@example.com:5432/dbname.

MATCHESSolution

However, I now suggest just using the supabase service role key on the backend — on the backend. Tension: Without RLS, this works fine, updating the row successfully. Outcome: supabase: Client = create_client( os.environ.get("NEXT_PUBLIC_SUPABASE_URL"), os.environ.get("SUPABASE_SERVICE_ROLE_KEY"), ).

MATCHESSolution

Some manuals suggest mitigation by prepending `SET LOC — per connection - once returned to connection pool. Outcome: mitigation by prepending `SET LOC.

MATCHESSolution

brew services stop postgresql@15 — problem deals with postgres on localhost. Tension: psql -h localhost -p 5432 -U username -d dbname. Outcome: After these commands I can connect to DB.

MATCHESSolution

Increasing the timeout, pool size and pooling in the connection string helped in my case. — I faced the same issue where the first connection attempt or a connection after a longer period would immediately time out. Outcome: I added these parameters: `Timeout=60;Command Timeout=60;Pooling=true;MinPoolSize=1;MaxPoolSize=200`.

MATCHESSolution

Fix the connection string by using a password without problematic characters or properly percent-encoding the password (e.g., encodeURIComponent) before forming the postgres:// URL.

MATCHESSolution

Ensure the Render DB instance is configured to allow external connections (e.g., public availability or proper network/access settings) and then connect from pgAdmin using the correct hostname/connection parameters.

MATCHESSolution

Introduce a connection pooler by installing and configuring pgbouncer and point QGIS to the pgbouncer port (e.g., 6432) so connections are pooled and reused rather than creating new ones.

MATCHESSolution

Query the correct Supabase table name in `.from('TABLE_NAME')`, and ensure the Next.js dev server is running locally (e.g., `npm run dev` and `localhost:3000` is available).

MATCHESSolution

I needed to use `@prisma/client/edge` — my server action. Tension: I forgot to set my server action to run on the server. Outcome: The solution for me was that I forgot to set my server action to run on the server using `use server`.

MATCHESSolution

decorate a connection pool with a priority queue to avoid overloading the connection pool — When the connection pool usage goes above some critical level. Tension: start throttling requests and maybe even drop low priority requests from the queue all together.

MATCHESSolution

calls requesting the Provider afterwards do not work (the user returns null — after a Spring 5 -> 6 (Spring Boot 3.3.4) migration. Tension: I can sign in to my site, but calls requesting the Provider afterwards do not work. Outcome: I fixed this today, and found the following out that helped resolve this in my custom filter code.

MATCHESSolution

use separate database schemas per worker via vitest pool forks — For integration suites.

MATCHESSolution

Extend the !PROTOPT_CREDSPERREQUEST comparison to include all options that change the connection's authenticated identity. Tension: a connection-pool match predicate must include every input that affects the authenticated/authorized state. Outcome: Matches upstream fix in commit cb49e67303dbafbab1cebf4086e3ec15b7d56ee5.

MATCHESSolution

Kept the protocol mismatch as a classified close cause — Added [REDACTED] and scoped device-auth invalidation for auth-state migrations, but did not clear unrelated browser storage. Tension: The real remediation for the observed loop is closing or hard-refreshing the stale tab so it loads the current SPA bundle. Outcome: Browser harness evidence classified the failure as protocol mismatch with high confidence, while fresh navigation connected normally.

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