From 8cca7461d429954f4cf99191fcd5b20a9f271220 Mon Sep 17 00:00:00 2001
From: Graham McIntire <graham@mcintire.me>
Date: Mon, 6 Apr 2026 09:38:47 -0500
Subject: [PATCH] Reduce DB pool size to 20 for 3-replica deployment
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3 replicas × 50 connections exceeded max_connections during rollout.
20 per replica = 60 steady-state, 120 during rolling deploy.
---
 config/runtime.exs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/config/runtime.exs b/config/runtime.exs
index 3c988385..10474812 100644
--- a/config/runtime.exs
+++ b/config/runtime.exs
@@ -98,7 +98,7 @@ if config_env() == :prod do
   config :microwaveprop, Microwaveprop.Repo,
     # ssl: true,
     url: database_url,
-    pool_size: String.to_integer(System.get_env("POOL_SIZE") || "50"),
+    pool_size: String.to_integer(System.get_env("POOL_SIZE") || "20"),
     # For machines with several cores, consider starting multiple pools of `pool_size`
     # pool_count: 4,
     socket_options: maybe_ipv6