Production
Run software that stays up: reliability, incidents, scaling and safe releases.
About Production
Running software in production is about keeping it reliable for real users. This subject brings everything together: SLIs, SLOs and error budgets, incident response and postmortems, scaling, safe releases and disaster recovery.
These are the practices of Site Reliability Engineering (SRE), as used at Google and most large tech companies.
Why it matters for placements
Senior DevOps and SRE interviews focus on how you handle failures and scale. Even at entry level, knowing how incidents are run and measured sets you apart.
What you'll learn
4 topics · 11 lessons, each with practice
- Define SLIs and SLOs, and calculate error budgets
- Respond to an incident and write a blameless postmortem
- Scale services horizontally and remove single points of failure
- Release safely with feature flags and gradual rollouts
- Plan backups and disaster recovery with RPO and RTO
Interview Ready Interview Ready
Take Interview Ready testRecommended. Enough for technical rounds at good product companies.
Reliability
Not startedServers crash, disks fail and people run the wrong script, so a real service must keep working when parts of it break. This topic covers spreading work across copies, removing single points of failure and recovering lost data. These ideas come up in almost every system design interview.
Incident Management
Not startedOutages will happen however careful you are, and what matters is how fast and calmly the team recovers. This topic covers running the response, writing down the steps for known problems and learning from each failure. Freshers on call need this before their first page.
Advanced Advanced
Take Advanced testOptional. For top product companies. Never counted against your readiness.
Scaling
Not startedA service that works for 100 users can fall over at 100,000, and the fix depends on where the bottleneck is. This topic covers adding servers, caching hot data and scaling the database, roughly in the order teams try them. It is the core of most system design interviews.
Release Engineering
Not startedMost outages start with a change, so how you ship code matters as much as the code itself. This topic covers releasing features gradually and deploying new versions without users seeing errors. Interviewers often ask how you would roll out a risky change safely.