lsBlog
Technical notes. What I've learned by building.
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- 2026-04-30engineering5 min read
Splitting central from regional without duplicating everything.
Multi-region isn't 'one stack, copy-pasted N times.' Three layers, each with a clear job, and a single rule about who depends on whom.
- 2026-04-26engineering4 min read
Build vs buy on AWS: when self-hosted compute beats managed.
Managed services bill per output. Self-hosted compute has a fixed base. The economics cross, and it pays to know where the crossover is before you commit.
- 2026-04-22engineering3 min read
Tunneling to a private RDS without a bastion.
Reach a private RDS instance from your laptop without a bastion EC2. SSM Session Manager port forwarding does it in one command.
- 2026-04-11engineering6 min read
SQS between services, not just for long jobs.
Synchronous calls are the default reflex. Half of them shouldn't be. A queue between producer and consumer changes the failure shape of your whole system.