From d8a9617c0e6fc6e6e9fa1408552e4dec57b55a5a Mon Sep 17 00:00:00 2001
From: kevinnkansah <kevinnkansah6@gmail.com>
Date: Mon, 6 Oct 2025 00:36:25 +0200
Subject: [PATCH] fix: fix: asyncpg bouncer connection pool error

Prepared statement caching is disabled by setting
`statement_cache_size=0` in the `asyncpg` connection pool parameters.
This is necessary to prevent
`asyncpg.exceptions.InvalidSQLStatementNameError` when using
transaction-level connection poolers like Supabase Supavisor or
pgbouncer, which do not support prepared statements.
---
 lightrag/kg/postgres_impl.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lightrag/kg/postgres_impl.py b/lightrag/kg/postgres_impl.py
index 37b39b49..8fc9d590 100644
--- a/lightrag/kg/postgres_impl.py
+++ b/lightrag/kg/postgres_impl.py
@@ -161,6 +161,7 @@ class PostgreSQLDB:
                 "port": self.port,
                 "min_size": 1,
                 "max_size": self.max,
+                "statement_cache_size": 0,
             }
 
             # Add SSL configuration if provided