# uber/tchannel

network multiplexing and framing protocol for RPC

Repository: https://github.com/uber/tchannel
Canonical: https://ross.abutalabs.com/products/tchannel
Language: Thrift
License: MIT
License Family: permissive
Archived: true
Last push: 2022-05-03T16:14:01+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 4271, "days_push": 1583, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, archived
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1149, forks 119 (observed 2026-08-28T04:03:46.387564+00:00)

## What it is
TChannel is a network multiplexing and framing protocol for general-purpose RPC, with peer libraries in Node.js, Python, Go, and Java. It supports out-of-order responses, request fragmentation, optional checksums, and transporting multiple protocols such as HTTP+JSON and Thrift.

## Use cases
- build high-performance RPC between microservices
- multiplex many requests over a single connection
- forward requests quickly through intermediaries
- transport Thrift and HTTP+JSON over one protocol
- fragment large requests and responses progressively
- inspect TChannel traffic with packet capture tools

## When to choose
- you maintain an existing Uber-style microservice stack already speaking TChannel
- you need out-of-order request/response multiplexing over TCP
- you need a simple multi-language framing protocol to implement yourself

## When to avoid
- starting a new project, since the project is no longer active
- you need a maintained protocol with ongoing security fixes
- you want standard RPC ecosystems like gRPC with broad tooling

## Facets
- artifact type: library
- maturity: abandoned
- function: rpc, networking, serialization
- domain: networking, microservices, developer-tools
- platform: python, go, jvm, cross-platform
- tags: multiplexing, framing-protocol, thrift, out-of-order-responses, deprecated, nodejs

## Member repositories
- uber/tchannel (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:46.387564+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:33:47.343498+00:00, confidence not recorded.
  - readme: https://github.com/uber/tchannel (fetched 2026-08-28T04:03:46.387564+00:00, sha 3d7d6836f9e8)
- Data as of 2026-08-30T08:39:29.467469+00:00.