From: Andrei Krylosov <krylosov-aa@yandex-team.ru>
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Subject: =?utf-8?Q?=5BTool=5D_pg-status_=E2=80=94_lightweight_microservice?=
 =?utf-8?Q?_for_checking_PostgreSQL_host_status?=
Message-Id: <D348AA1C-2429-4E75-880F-710E852ECC5C@yandex-team.ru>
Date: Thu, 22 Jan 2026 13:20:31 +0300
To: pgsql-general@lists.postgresql.org
Archived-At: <https://www.postgresql.org/message-id/D348AA1C-2429-4E75-880F-710E852ECC5C%40yandex-team.ru>
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Hi all!

I'd like to share a small open=E2=80=91source project I've been working =
on: [pg-status](https://github.com/krylosov-aa/pg-status).

pg-status is a lightweight microservice (sidecar) that helps you =
instantly determine the status of your PostgreSQL hosts: whether they =
are alive, which one is the master, which ones are replicas, and how far =
each replica is lagging behind the master.

It's designed to run alongside your main application. It's lightweight, =
resource=E2=80=91efficient, and delivers high performance. You can query =
it on every request without noticeable overhead.

pg-status polls your database hosts in the background at a configurable =
interval and exposes an HTTP interface that you can use to retrieve =
hosts matching given conditions.

I originally built it to speed up master detection in a multi=E2=80=91host=
 setup where DNS failover was too slow, but it's also handy for proxy =
setups or custom load=E2=80=91balancing logic.

More information is available on GitHub: =
https://github.com/krylosov-aa/pg-status

Feedback and discussion are very welcome. I'd love to hear your =
thoughts!

Best regards, =20
Andrei Krylosov