DevOps & Cloud

CI/CD pipelines, containerization, cloud-native deployments, and infrastructure automation.

5 posts in DevOps & Cloud

Database Migrations in Production: Schema Changes Without Downtime

The migration ran in 40 milliseconds and still caused an outage. Production schema changes fail in two ways: the old code can't handle the new schema during a rolling deploy, or a quick ALTER waits on a lock and freezes every query behind it. Here's the expand/contract pattern, the locking traps, and how to change a schema under live traffic.

database migrationszero downtimeexpand and contractschema changes

Oct 21, 2026Read

DevOps & Cloud|8 min read

SLIs, SLOs, and SLAs: Measuring Reliability with Error Budgets

"99.9% uptime" sounds like a number everyone agrees on until you ask what counts as up, measured where, over which month. SLIs, SLOs, and SLAs answer those questions, and error budgets turn them into decisions about when to ship and when to stop. Here's how they fit together and how to alert on them without paging people for nothing.

SLOSLISLAerror budget

Oct 19, 2026Read

DevOps & Cloud|11 min read

Retry Strategies: Exponential Backoff, Jitter, and Retry Budgets

Retries turn a brief blip into an invisible non-event, or they turn it into an outage that outlasts the original failure by an hour. The difference is when you retry, how many clients retry together, and who's allowed to retry at all. Here's how to retry without taking down the thing you're waiting on.

retriesexponential backoffjitterretry budget

Sep 14, 2026Read

DevOps & Cloud|11 min read

Metrics vs Logs vs Traces: The Three Pillars of Observability

Your dashboard is green, your logs are 40GB a day, and you still can't say why that one request took nine seconds. The three telemetry types answer three different questions — and knowing which one to reach for is the difference between debugging and guessing.

observabilitymetricsloggingdistributed tracing

Aug 30, 2026Read

DevOps & Cloud|7 min read

Blue-Green Deployments: Zero-Downtime Releases

Deploying by upgrading servers in place means a window where the app is down or half-updated, and a rollback means another anxious redeploy. Blue-green flips that: run two full environments, keep one live, and switch traffic in an instant — with a rollback that's just as instant.

blue-green deploymentdevopszero downtimerelease strategy

Jul 4, 2026Read

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