biology
Honey bee colonies maintain the brood nest at 34-36 degrees Celsius across ambient temperatures ranging from below freezing to over 40 degrees. The mechanism is one of the cleanest cases of distributed engineering in the natural world, with no central controller and no individual bee aware of the...
engineering
The HTTP Deprecation and Sunset headers let an API tell clients which endpoints are deprecated and when they will stop working. Most APIs do not use them. The reasons are mostly cultural, and the small group of APIs that do use them get most of their value from the surrounding discipline.
history
Before 1840, the recipient paid the postage on a letter, and the rate was calculated by distance and number of sheets. Rowland Hill argued the system was broken and the fix was a flat low rate paid by the sender via an adhesive stamp. Almost everything about modern communication descended from th...
engineering
Postgres 16 added pg_stat_io, a system view that exposes I/O activity broken down by backend type and I/O context. It closes a long-standing observability gap. Most teams have not noticed the view exists yet.
api-design
Hard limits return errors. Soft limits warn the customer that they are approaching the threshold so the customer can adjust before the hard limit fires. The patterns that work are simple but underused in B2B SaaS.
essay
The schoolroom version of the steam engine credits James Watt as the inventor. The actual history runs through Thomas Newcomen's 1712 atmospheric engine, which operated commercially for sixty years before Watt improved it, and through Hero of Alexandria's working steam toy 1700 years earlier.
essay
The trapdoor spider builds a silk-lined burrow with a hinged camouflaged door, sits at the entrance for decades, and ambushes any insect that walks past. The longevity, sensory engineering, and life history of these spiders are stranger than the schoolroom version suggests.
engineering
The pg_locks system view shows every lock currently held or waiting in the database. Most teams reach for it during an incident and discover the columns are not obviously interpretable. The structure is worth understanding before the next incident.
essay
The 1839 Charles Goodyear discovery of vulcanization is one of the rare cases in industrial chemistry where a genuinely accidental observation transformed a useless material into the foundation of a global industry within a generation.
essay
The greater honeyguide bird (Indicator indicator) of sub-Saharan Africa flies to a human, makes a distinctive call, and leads the human to a wild beehive. The mutualism between bird and human is one of the very few well-documented cooperative relationships between humans and a non-domesticated sp...
engineering
Postgres 12 changed the default behavior of CTEs from optimization-fence to inlineable. This was almost always an improvement, but the cases where the old behavior was actually load-bearing are worth understanding.
api-design
Most webhook docs describe the signing mechanism. Far fewer describe how to rotate the signing secret without breaking every customer integration. The patterns that work are simple but underused.