—Career
Video-Listing API ~30× Speedup
PeriodOct 2022 – Mar 2023
RoleSole API developer + load-testing ownership
Made a high-traffic video-listing API ~30× faster with an in-memory DTO cache
01Overview
Noticing the API's read-heavy / write-rare access pattern, I redesigned it to keep DTOs in memory and let the API only filter them. The result was a roughly 30× speedup on a high-traffic API, released with zero defects. I owned load testing end-to-end — from planning to execution and analysis.
02Highlights
- Made a high-traffic API ~30× faster, released with zero defects
- In-memory DTO cache design targeting a read-heavy/write-rare pattern
- Owned load testing end-to-end — planning, execution, and analysis
03Tech Stack
JavaSpring BootSQL ServerIn-Memory CachejMeter
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