From ba5494becbdd9ee6c0b0eb7169fe0d09158f84f6 Mon Sep 17 00:00:00 2001
From: Shahab Dogar <shahab@dogar.dev>
Date: Wed, 15 Oct 2025 12:07:05 +0500
Subject: [PATCH] fix: Postgres | adjust postgres.conf params for smaller wal
 size + defaults

---
 postgres/index.ts | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/postgres/index.ts b/postgres/index.ts
index fa24caa..4d12bbd 100644
--- a/postgres/index.ts
+++ b/postgres/index.ts
@@ -330,6 +330,36 @@ export class PostgresCluster extends Construct {
             replicationTLSSecret: certNames.client,
           },
           postgresql: {
+            parameters: {
+              archive_mode: "on",
+              archive_timeout: "5min",
+              checkpoint_timeout: "10min",
+              checkpoint_completion_target: "0.7",
+              dynamic_shared_memory_type: "posix",
+              full_page_writes: "on",
+              log_destination: "csvlog",
+              log_directory: "/controller/log",
+              log_filename: "postgres",
+              log_rotation_age: "0",
+              log_rotation_size: "0",
+              log_truncate_on_rotation: "false",
+              logging_collector: "on",
+              max_parallel_workers: "32",
+              max_replication_slots: "32",
+              max_wal_size: "768MB",
+              max_worker_processes: "32",
+              max_slot_wal_keep_size: "256MB",
+              min_wal_size: "128MB",
+              shared_memory_type: "mmap",
+              shared_preload_libraries: "",
+              ssl_max_protocol_version: "TLSv1.3",
+              ssl_min_protocol_version: "TLSv1.3",
+              wal_keep_size: "128MB",
+              wal_level: "logical",
+              wal_log_hints: "on",
+              wal_receiver_timeout: "5s",
+              wal_sender_timeout: "5s",
+            },
             pg_hba: [
               `hostssl all      ${options.primaryUser}   all          cert`,
               "hostssl sameuser all      all          cert",