Writing

The default dead-tuple threshold is a percentage of the table, so it grows as the table grows. Past a certain size autovacuum effectively stops running, and nothing in the log says so.

postgres · vacuum · operations

The search step returned zero results for every query and reported success. Two more like it. All three were found by deterministic checks, not by monitoring.

llm · debugging · observability

Four agents, one document, one cent. The writer takes three quarters of the spend and the researcher takes none of it, which changes where optimisation is worth doing.

llm · cost · observability