Fresha replaced its Postgres‑Snowflake‑MSK pipeline with an AutoMQ‑based Diskless Kafka message layer and StarRocks for real‑time analytics, cutting storage costs 17‑20×, dropping query latency from seconds to sub‑second, and migrating ~1,000 topics in a week with zero downtime.
This article details a comprehensive sharding strategy for a high‑traffic message table, explaining why early partitioning is essential, how to design language‑based vertical shards combined with hash‑based horizontal shards, calculate table counts and virtual nodes, and execute a zero‑downtime migration using dual‑writes and gradual traffic rollout.
The article analyzes a JD interview question on scaling a MySQL order table from 100 million to billions of rows, detailing four practical expansion strategies—stop‑service migration, double‑write migration, ShardingSphere middleware, and dual‑VIP routing—each with step‑by‑step procedures, code samples, risk assessments, and validation methods to enable near‑instant capacity growth without service interruption.
This guide explains how to achieve a zero‑downtime Kafka cluster migration by deploying a new cluster, configuring MirrorMaker 2 for bidirectional replication, gradually switching producers and consumers, monitoring key metrics, and safely decommissioning the old cluster.
This article details how Wix migrated its 2000 microservices from a self‑hosted Kafka cluster to a multi‑cluster Confluent Cloud setup with zero downtime, describing the design decisions, partitioning strategy, Greyhound SDK usage, replication service, migration orchestrator, and best‑practice recommendations.
This article details the evolution of Vivo's e‑commerce coupon platform, covering its business drivers, architectural redesign, sharding strategy, multi‑mode issuance, high‑performance safeguards, and a step‑by‑step zero‑downtime migration to a standalone service.
This article details how a high‑traffic e‑commerce platform migrated from a single MySQL instance to a sharded architecture using Sharding‑JDBC, added Elasticsearch‑HBase for multi‑dimensional queries, and implemented zero‑downtime data migration and scaling strategies.
This guide explains how to transform ordinary, partitioned, or index‑organized Oracle tables to new structures online, using the DBMS_REDEFINITION package, while minimizing lock time and avoiding service interruption in 24‑7 environments.
