"Each mutation is appended to the log, which acts as a single source of truth, before being applied asynchronously to target databases. The system separates message producers from message consumers, allowing multiple downstream services to consume the same log independently. Netflix uses SQS and Kafka with dead-letter queues enabled by default to ensure reliable delivery and error handling. The design supports target flexibility, allowing mutations to be routed to different storage backends or processing pipelines,"
"Netflix has implemented a Write-Ahead Log (WAL) system to increase the resilience of its data platform. WAL was designed to address various challenges at Netflix, including data loss, replication system entropy, multi-partition failures, and data corruption. The system captures database mutations in a durable log before applying them to downstream services, ensuring consistency and recoverability even during outages. The architecture of Netflix's WAL service is modular and pluggable."
Netflix deployed a Write-Ahead Log (WAL) that records database mutations in a durable log before applying them to downstream systems, providing a single source of truth and enabling recovery during outages. The WAL architecture is modular and pluggable, separating message producers from consumers so multiple downstream services can consume the same log independently. Netflix uses SQS and Kafka with dead-letter queues by default for reliable delivery and error handling. The system supports routing mutations to different storage backends or pipelines and integrates with a centralized control-plane gateway and Data Gateway for configuration, access, and monitoring. The deployment runs distributed replicas, balances load, maintains strong consistency, and allows configuration changes without code updates.
Read at InfoQ
Unable to calculate read time
Collection
[
|
...
]