Wednesday, 21st March 2018
Using flamegraphs. I really like flamegraphs as a profiling tool—we have support for them baked into our Tikibar debugging toolbar at Eventbrite—but interpreting them isn’t particularly intuitive on first glance. Julia Evans has put together a great explanation of how to read them as part of the documentation for her rbspy Ruby profiler. # 8:56 pm
User-defined Order in SQL (via) This is a fun intellectual exercise: how can one efficiently implement a user-defined order in a SQL table? The obvious initial approach is to have an integer position column, but this means every subsequent row must be updated when an item changes position. Joe “begriffs” Nelson explores some clever alternatives, including floating point or decimal positions (allowing new items to be inserted at a midpoint between existing positions) and a new custom rational number type he buiIt as a PostgreSQL extension. # 2:07 pm
Adhering to a plan Moon spelled out more than three decades ago in a series of sermons, members of his movement managed to integrate virtually every facet of the highly competitive seafood industry. The Moon followers’ seafood operation is driven by a commercial powerhouse, known as True World Group. It builds fleets of boats, runs dozens of distribution centers and, each day, supplies most of the nation’s estimated 9,000 sushi restaurants.