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Architect
Architect
Jun 3, 2020 · Backend Development

Elasticsearch Distributed Consistency Analysis: Data Flow, PacificA Algorithm, Sequence Numbers and Checkpoints

This article provides a detailed examination of Elasticsearch's distributed consistency mechanisms, covering the shard write path, the PacificA replication algorithm, the role of SequenceNumber and Checkpoint, and a comparison of ES's implementation with the original algorithm, based on version 6.2.

BackendCheckpointDistributed Consistency
0 likes · 23 min read
Elasticsearch Distributed Consistency Analysis: Data Flow, PacificA Algorithm, Sequence Numbers and Checkpoints
Architecture Digest
Architecture Digest
Jul 6, 2017 · Fundamentals

PacificA: Microsoft’s General Replication Framework for Large‑Scale Distributed Storage Systems

PacificA is Microsoft’s generic replication framework for large‑scale distributed storage systems that provides strong consistency, separates configuration management from data replication, and uses a primary‑secondary model with lease‑based fault detection to ensure availability, correctness, and efficient operation across heterogeneous nodes.

Distributed StoragePacificAReplication
0 likes · 14 min read
PacificA: Microsoft’s General Replication Framework for Large‑Scale Distributed Storage Systems