Source: Hacker News
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sql UPDATE PSMT_INVOICE_M SET SHIPPING_COUNTRY_ID = SRC.COUNTRY_ID, SHIPPING_CITY_ID = SRC.CITY_ID, SHIPPING_TOWN_ID = SRC.TOWN_ID FROM SELECT PM.INVOICE_M_ID,...
This is Day 7 of Building SaaS Solo – Design, Implementation, and Operation Advent Calendar 2025. Yesterday I wrote about “Schema Design with Supabase.” Today I...
Introduction You’re staring at perf top showing 60 % CPU time in pthread_mutex_lock. Your latency is terrible. Someone suggests “just use a spinlock,” and sudd...
