PgHook – Docker image that streams PostgreSQL row changes to webhooks
I needed real-time updates in a web UI whenever PostgreSQL table rows change, so I built PgHook. It's a 23 MB Docker image (10.1 MB compressed), .NET9 AOT-compiled, that streams logical replication events and sends them to a configurable webhook. In my setup, the webhook converts events to SignalR messages that push updates to the UI. I know about Debezium but I needed something minimal, and I like playing with csharp.
PgHook – Docker image that streams PostgreSQL row changes to webhooks launched on August 15, 2025 with 39 votes, #512 of 8,530 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 1 year on.
In plain words
PgHook is a Docker image that captures PostgreSQL row changes using logical replication and streams them to a configurable webhook in real time. Built with .NET9 and compiled ahead-of-time, the image is 23 MB (10.1 MB compressed). It enables web applications to receive live database updates by forwarding replication events to webhooks, which can then trigger UI notifications or other actions. Designed as a minimal alternative to larger solutions.
written from the facts on this page · September 2026
From the sources
PgHook listens to PostgreSQL logical replication events and posts changed row information as JSON to webhooks. - PgHookCom/PgHook
PgHook streams PostgreSQL change events (logical replication via PgOutput2Json ) and delivers them to a webhook . Distributed as a small-footprint 33.89 MB container image (13.38 MB compressed, AOT-compiled .NET 9, Alpine). wal_level = logical # If needed increase the number of WAL senders, replication slots. # The default is 10 for both. max_wal_senders = 10 max_replication_slots = 10 Other necessary settings usually have appropriate default values for a basic setup. Note: PostgreSQL must be restarted after modifying this setting. CREATE PUBLICATION mypub FOR TABLE table1, table2; Run PgHook with the minimum required environment: docker run --rm \ -e PGH_POSTGRES_CONN= "…from github.com
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