Things we figured out the hard way. Updated whenever we have something worth saying — usually once a month.
After three months of fighting fingerprint detection, we rewrote the whole pipeline against the mobile GraphQL endpoint. Here is what broke and what finally worked.
When LINE quietly tightened its 1011 throttle in February, half our group bots went silent overnight. The fix was not what we expected.
We ran the same Go binary on both for 30 days. The latency difference was small. The price difference was not.
A walkthrough of the m4a stitching trick we use in production, including the part where we got rate limited and had to back off.
