blog.otsu.devCode, coffee, devs

Cloud architect (AWS).
Writes rarely, this is where it lands.
Built and scaled stuff you maybe heard of.

A benchmark of Node, Bun, and Deno in AWS Lambda

2026-02-21: Using a different runtime for JS/TS can have a meaningful difference in cost performance for Lambda.

2025-08-03: Private subnets are expensive due to NAT and introduces unncessary complexity.

2025-03-14: A braindump of gotchas encountered during an Akamai -> Cloudflare migration.

2024-02-12: With a simple trick we can add tags to all resources created and managed by AWS SAM.

2023-11-04: If we collect cost & usage reports we can easily query them with Athena to spot trends and unexpected use.

2023-10-31: If you're not the organization owner collecting and making sense of cost and usage reports can be tricky.