Part 6 of the Musaned series: the architecture that kept countless integrations manageable — one service class per external system, carefully ordered queues, and Redis as the cache store.
Part 5 of the Musaned series: fiber customer information lived in Microsoft SQL Server, and getting PHP to talk to it reliably was its own dependency saga — with different traps than Oracle.
Part 4 of the Musaned series: voucher data lived in Oracle, PHP needed oci8, oci8 needed Instant Client, and processing 2M+ records fast eventually meant going straight to SQL*Plus.
