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Life & fun · January 13, 2026

Ayder – HTTP-native durable event log written in C (curl as client)

Hi HN, I built Ayder — a single-binary, HTTP-native durable event log written in C. The wedge is simple: curl is the client (no JVM, no ZooKeeper, no thick client libs). There’s a 2-minute demo that starts with an unclean SIGKILL, then restarts and verifies offsets + data are still there. Numbers (3-node Raft, real network, sync-majority writes, 64B payload): ~50K msg/s sustained (wrk2 @ 50K req/s), client P99 ~3.46ms. Crash recovery after SIGKILL is ~40–50s with ~8M offsets. Repo link has the video, benchmarks, and quick start. I’m looking for a few early design partners (any…

Ayder – HTTP-native durable event log written in C (curl as client) launched on January 13, 2026 with 56 votes, #522 of 14,584 launches that month and more than 95% of that year's launches.

Visit github.com ↗Alternativestop 4% of January 2026

In plain words

Ayder is a durable event log written in C that uses HTTP and curl as its client interface, eliminating the need for a JVM, ZooKeeper, or thick client libraries. It runs as a single binary and uses Raft for distributed consensus across nodes. The system achieves approximately 50,000 messages per second with a P99 client latency of 3.46 milliseconds and recovers from crashes in 40-50 seconds. It is designed for teams building event ingestion and streaming workloads who want a lightweight, simple alternative to traditional message brokers.

written from the facts on this page · September 2026

From the sources

Contribute to A1darbek/ayder development by creating an account on GitHub.

HTTP-native durable event log and message bus, written in C. Ayder provides durable produce, deterministic offset replay, consumer groups, committed offsets, idempotency keys, and Raft-based high availability through a plain HTTP API. The examples are not built-in payment or data products. They demonstrate how application evidence can be derived from Ayder's durable event and replayfrom github.com

In the maker’s words, at launch

Hi HN, I built Ayder — a single-binary, HTTP-native durable event log written in C. The wedge is simple: curl is the client (no JVM, no ZooKeeper, no thick client libs). There’s a 2-minute demo that starts with an unclean SIGKILL, then restarts and verifies offsets + data are still there. Numbers (3-node Raft, real…

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