HA: Отказоустойчивость PostgreSQL. Transaction Guard
При создании отказоустойчивых систем, стремятся гарантировать отсутствие потерь транзакций при восстановлении из бэкапов или при переключении на реп…
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Cloud Run moves regional failover out of the runbook and into the load balancer
Google Cloud posted on July 20 that Cloud Run now shifts traffic away from an unhealthy region automatically, within seconds, through two new signal…
Designing for High Availability & Disaster Recovery (RTO/RPO)
The 3am page that defines your career At 3am, an availability zone goes dark. If your system is well-designed, nothing happens, traffic shifts, repl…
The Oracle HA Decision Tree: RAC vs Data Guard vs Both
"We have RAC, so we're covered for DR." It's one of the most expensive sentences in Oracle operations, and I've watched variations of it play out mo…
Failover Sounds Good… Until It Doesn’t Work
“We have failover.” That sounds reassuring. But when real failure hits… many systems still go down — hard. Why? Because failover is easy to configur…