Zero Downtime
Everything on SkillVeris tagged Zero Downtime — collected across the glossary, study notes, blog, and cheat sheets.
5 resources across 1 library
Interview Questions(5)
How Do You Design a Zero-Downtime Database Migration?
A zero-downtime database migration succeeds by decomposing a risky single cutover into small, reversible, backward-compatible steps — expand the schema, dual-w…
How Does Blue-Green Deployment Apply to Databases?
Blue-green deployment for databases means maintaining two full environments — the live blue database and an idle green database with the new schema and data fu…
What Are Online Schema Change Tools and How Do They Work?
Online schema change tools such as gh-ost and pt-online-schema-change let you alter a large production table — add a column, change an index — without holding…
How Do You Rebalance Shards Without Downtime?
Rebalancing shards without downtime means gradually migrating a subset of data to new or less-loaded shards while keeping both the old and new locations correc…
What Is a Rolling Update?
A rolling update is a deployment strategy that incrementally replaces old instances of an application with new ones, a few at a time, so the service remains av…