Platform team · Q3 2026

Q3 platform review

What we changed, what it cost, what it bought us. Scroll or press space – each slide is one point.

The quarter in three numbers

What we shipped

• Read-path caching in front of the three hottest queries – the p99 win.
• Queue consolidation from four brokers to one – the spend win.
• Migration lint + staging at scale – no lock-taking migration has reached production since.

What we deliberately did not do

• The multi-region read replica – demand didn't materialize; re-evaluate on the first EU-latency escalation.
• Service extraction of the billing module – the monolith's boundary held; the extraction stays parked.

Q4 plan

• October: retire the legacy search index (last consumer migrates 3 Oct).
• November: load-test the write path at 3× peak before the seasonal spike.
• December: freeze except fixes; on-call hardening week.

Questions

Comments welcome on any slide

Numbers are sample data – replace with your own.