AI dramatically reduces the cost of producing code, but writing software has never been the entire cost of software. When throwaway scripts quietly harden into unmaintained infrastructure, understanding becomes the hidden debt.
In the quiet of a Chennai tech office, an on-call engineer's emergency decision to save a primary database forces a tedious, fourteen-hour rebuild of its replica from scratch.
When a physical replication slot is dropped to save a primary database from disk exhaustion, there are no clever tricks to bridge the LSN gap. Just the quiet reality of a full rebuild.
A real-time dissection of a replication failure in a Chennai server room, where the line between mathematical certainty and physical disk space wears thin.
An examination of write-ahead logging, dirty buffers, and why database reliability relies on accepting that memory is a lie until it is flushed to disk.
