● Covered by 1 source · 1 reportMedium impact1 neutral
Cloudflare Launches Meerkat, a Leaderless Global Coordination Service Based on QuePaxa
Key points
- Cloudflare launched Meerkat, a new internal control-plane service.
- Meerkat uses the QuePaxa consensus algorithm for global consistency.
- It supports leaderless writes, unlike Raft, to improve availability.
- Meerkat is expected to be the first production deployment of QuePaxa globally.
Cloudflare Introduces Meerkat
Cloudflare has announced Meerkat, a new internal service designed for globally consistent control-plane coordination. This service is built upon the QuePaxa consensus algorithm, marking a significant development in distributed systems within Cloudflare's infrastructure.
Addressing Limitations of Existing Algorithms
Traditional consensus algorithms, such as Raft, often face challenges in wide-area networks due to their reliance on a single leader for writes. If this leader fails or becomes unreachable, the system experiences downtime until a new leader is elected. Cloudflare developed Meerkat to overcome these availability issues.
Meerkat's implementation of QuePaxa allows all replicas to accept writes concurrently, eliminating the need for leader timeouts and the associated availability loss in distributed systems.
Technical Capabilities and Impact
Meerkat provides a consensus log that supports various services, including a transactional key-value store and a leasing system. The system ensures strong consistency through a globally replicated consensus log, guaranteeing that all replicas agree on the order and values of committed operations, thus providing linearizable reads and writes.
Cloudflare states that Meerkat is anticipated to be the first production deployment of the QuePaxa algorithm at a global scale, indicating its potential to influence future distributed system designs.
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Reporting from
Cloudflare introduced Meerkat, an internal globally consistent control-plane service that uses the QuePaxa consensus algorithm. Meerkat allows leaderless writes, which improves availability across Cloudflare's global network by avoiding the downtime associated with leader failures in traditional consensus algorithms like Raft.