Tencent/phxpaxos

Health v2 · maintenance only

Flags: no_license

Adoption not part of the score

3374 stars · 852 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

PhxPaxos is a C++ library implementing the Paxos consensus protocol for state synchronization across a multi-node cluster, battle-tested in WeChat's production environment. It provides automatic fail-over, master election, reconfiguration, checkpoint management, and pluggable network/storage modules.

Use cases

• build a highly available replicated state machine cluster
• implement master election among service nodes
• synchronize state across multiple servers with strong consistency
• add fault-tolerant fail-over to a distributed service
• store replicated logs with guaranteed consistency
• learn about Paxos consensus in production-grade C++ code

When to choose

• you need proven, production-hardened Paxos consensus in C++
• you want automatic master election and cluster reconfiguration
• you need strong durability guarantees via fsync on every write
• you want pluggable network, storage, and monitoring modules

When to avoid

• you need a client-server protocol out of the box - you must wrap your own server
• you target non-Linux or 32-bit platforms - only Linux 64-bit is tested
• you need multi-process access to a single Paxos instance
• you prefer higher-level consensus frameworks like etcd/Raft with built-in APIs

Facets

library · maturity maintenance

concurrency message-queue rpc logging monitoring caching microservices databases developer-tools backend cpp cross-platform paxos consensus distributed-consensus replication state-machine-replication master-election fault-tolerance wechat linux

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