From 38e61a961320cdebcdccf17c97ce4b9499dfc7ae Mon Sep 17 00:00:00 2001
From: lardo_de_arnaud <adamm@ox.ac.uk>
Date: Thu, 12 Mar 2026 11:35:49 +0000
Subject: [PATCH] AB#114694 shrink the DB buffer size

---
 aws/rds.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/aws/rds.yaml b/aws/rds.yaml
index 30c264e..1a1f7ce 100644
--- a/aws/rds.yaml
+++ b/aws/rds.yaml
@@ -152,6 +152,10 @@ Resources:
         log_output: "FILE"
         long_query_time: "5"
         slow_query_log: "1"
+        # 16MB. This is a reduction from the RDS default, which seems tuned for larger instances.
+        innodb_log_buffer_size: "16777216"
+        # 96MB. Shave a little off the default of 128MB to free some memory.
+        innodb_buffer_pool_size: "100663296"
 
   #dbOptionGroup:
   #  Type: "AWS::RDS::OptionGroup"