InfoQ Homepage Database Replication Content on InfoQ
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Stripe's Zero-Downtime Data Movement Platform Migrates Petabytes with Millisecond Traffic Switches
At QCon SF, a Stripe engineer presented the company's Zero-Downtime Data Movement Platform, a system enabling petabyte-scale database migrations with traffic switches that typically complete in milliseconds. The platform supports Stripe's infrastructure, handling 5 million database queries per second while maintaining 99.9995% reliability for $1.4 trillion in annual transactions.
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From Outages to Order: Netflix’s Approach to Database Resilience with WAL
Netflix uses a Write-Ahead Log (WAL) system to improve data platform resilience, addressing data loss, replication entropy, multi-partition failures, and corruption. WAL decouples producers and consumers, leverages SQS/Kafka with dead-letter queues, and supports delay queues, cross-region replication, and multi-table mutations for high-throughput, consistent, and recoverable database operations.
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Amazon Aurora DSQL: Distributed SQL Database with Active-Active High Availability
At the recent AWS re:Invent conference in Las Vegas, Amazon announced the public preview of Aurora DSQL, a serverless, distributed SQL database featuring active-active high availability. This new PostgreSQL-compatible database option has generated significant excitement within the AWS community and was widely regarded by attendees as the standout announcement of the conference.
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Amazon Aurora Introduces Global Database Writer Endpoint for Distributed Applications
Amazon Aurora has recently introduced a Global Database writer endpoint to streamline routing for applications in disaster-recovery scenarios. This highly available global endpoint removes the need for application code changes to reestablish connectivity following a cross-region switchover or failover operation.
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MySQL 8.2 Introduces Transparent Read/Write Splitting
Oracle has recently announced the general availability of MySQL 8.2, which includes support for Read/Write Splitting. This long-awaited feature has been introduced in the latest innovation release and helps optimize database performance and scalability.
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Amazon RDS for PostgreSQL Now Supports pgactive for Active-Active Replication
AWS recently announced the general availability of pgactive on RDS for PostgreSQL. The replication extension for PostgreSQL supports asynchronous active-active replication for streaming data between database instances, enhancing resiliency and flexibility.
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AWS DMS Serverless Brings Automated Scalability and Performance Optimization with Database Migration
AWS recently announced a new option in its Database Migration Service (DMS) called serverless. It automatically sets up, scales, and manages migration resources to make database migrations easier and more cost-effective.
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Meta Switches to MySQL Raft to Improve Reliability and Operational Simplicity
Meta is rolling out MySQL Raft in its data centers to replace its current MySQL semisynchronous databases. The new consensus engine helps operation and allows MySQL servers to take responsibility for promotions and membership.
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Google Cloud Spanner Introduces Configurable Read-Only Replicas and Zero-Downtime Move Service
Google recently announced new regional and multi-regional capabilities for Cloud Spanner. The distributed SQL database now supports configurable read-only replicas and introduced a "zero-downtime" instance move service.
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Amazon Aurora PostgreSQL Adds Write-Through Cache to Improve Logical Replication Performance
Amazon Aurora PostgreSQL-Compatible databases recently introduced a logical replication write-through cache to reduce the amount of storage I/O during logical decoding. The new feature decreases the replication lag, improving read I/O and transaction catch-up time.
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HC-tree is a High-Concurrency Backend for SQLite Supporting Replication
HC-tree is a project aimed at building a new backend for SQLite specifically optimized for high-concurrency and lead-follower style replication. While still experimental, HC-tree can be used as an SQLite drop-in replacement, albeit with limitations.
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Amazon RDS Introduces Readable Standby Instances in Multi-AZ Deployments
AWS has recently announced readable standby instances in Amazon RDS multi-AZ deployments. The new database cluster option provides high availability and durability for workloads requiring more read capacity and consistent transaction latency.
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ZippyDB: the Architecture of Facebook’s Strongly Consistent Key-Value Store
Facebook Engineering recently published how it built its general-purpose key-value store, known as ZippyDB. ZippyDB is Facebook's biggest key-value store, which has been in production for more than six years. It offers flexibility to applications in terms of tunable durability, consistency, availability, and latency guarantees.
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Amazon Adds Global Clusters to DocumentDB
Amazon recently announced support for global clusters on DocumentDB, the document-oriented database compatible with MongoDB.
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Amazon Announces General Availability of Aurora Multi-Master
In a recent announcement, Amazon has publicized the general availability of Aurora Multi-Master, which allows for reading and writing on multiple database instances across several Availability Zones. Consequently, this brings high availability capabilities, as the platform no longer needs to trigger a fail-over upon failure of database instances.