{"repo":"tma1-ai/openfuse","free":true,"listed":false,"github":"https://github.com/tma1-ai/openfuse","clone":"git clone https://github.com/tma1-ai/openfuse.git","description":"Langfuse on GreptimeDB. Self-hosted LLM observability.","language":"TypeScript","stars":35,"topics":["greptimedb","langfuse","llm-observability","ai-engineering","llmops","observability","opentelemetry","self-hosted","tracing"],"license":null,"category":"analytics","readme_excerpt":"LLM engineering on a real observability database Quickstart · Deployment · Operations · Architecture · Known limitations · 中文 Openfuse is a fork of Langfuse that swaps the analytics store from ClickHouse to GreptimeDB. The Langfuse product, public APIs, and SDKs stay the same; GreptimeDB becomes the source of truth for traces, observations, scores, and the analytics behind dashboards. Why GreptimeDB LLM traces are observability data: timestamped wide events with high-cardinality context. That is exactly GreptimeDB's data model. GreptimeDB is a unified observability database — metrics, logs, and traces in one engine, SQL and PromQL/TQL queryable, OTLP-native, with compute–storage separation over object storage. Running Langfuse on it, instead of on a single-purpose columnar store, buys two things today: - Start small, scale as you grow. Begin with a single openfuse-standalone container — the GreptimeDB-standalone analogue. GreptimeDB persists to local disk or object storage, and the same engine scales from one node to a cluster as your data grows; scaling down loses no data. Object storage is optional: ingestion needs no S3 or MinIO. - Cheap long retention. Object-storage-native tiered storage plus a plain-SQL database TTL ( LANGFUSE GREPTIME TTL ) make multi-month or multi-year retention affordable — a sore point for ClickHouse-backed Langfuse, where configurable data retention is an Enterprise feature. The TTL here is deployment-wide, not per-project. It also opens a directi","default_branch":null,"files":null,"tree":[],"storefront":"/r/tma1-ai","claimed":false,"request_supported":{"post":"https://gitbuyer.com/r/tma1-ai/openfuse/request-supported","requests":0},"note":"indexed from public GitHub; nothing is for sale on this page. Clone it from GitHub. Paid listings live at /search."}