fix: conn leak in /accounts/:stake_address/utxos

Author: slowbackspace

CHANGELOG.md

@@ -5,13 +5,17 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased]
+## [6.4.0] - 2026-03-30
 
 ### Changed
 
 - Replaced `idle_session_timeout` (server-side Postgres setting) with `idleTimeoutMillis` (client-side pg-pool setting) for idle connection cleanup. Set via `dbSync.idleTimeoutMs` in config or `BLOCKFROST_CONFIG_DBSYNC_IDLE_TIMEOUT_MS` env var (value in milliseconds). Disabled by default (pg-pool falls back to its own 10,000ms default). The previous `dbSync.idleSessionTimeoutMs` / `BLOCKFROST_CONFIG_DBSYNC_IDLE_SESSION_TIMEOUT_MS` options are removed.
 - Exposed `min` pool size option. Set via `dbSync.minConnections` in config or `BLOCKFROST_CONFIG_DBSYNC_MIN_CONN` env var. Disabled by default (pg-pool defaults to 0).
 
+### Fixed
+
+- Fixed connection leak in `/accounts/:stake_address/utxos` where the DB connection was not released on 404 responses
+
 ## [6.3.4] - 2026-03-17
 
 ### Added

package.json

@@ -1,6 +1,6 @@
 {
   "name": "blockfrost-backend-ryo",
-  "version": "6.3.4",
+  "version": "6.4.0",
   "description": "",
   "keywords": [],
   "license": "Apache-2.0",

src/routes/accounts/stake-address/utxos.ts

@@ -32,6 +32,7 @@ async function route(fastify: FastifyInstance) {
         );
 
         if (query404.rows.length === 0) {
+          gracefulRelease(clientDbSync);
           return handle404(reply);
         }