In StarCraft you can give individual orders to your initial group of workers (drones) instead of giving them one big group order. It takes only a few seconds for your drones to move to the resources so you only have a few seconds to click and give multiple orders.
From the application perspective, it's not truly async. On a deference, your app may be blocked indefinitely as data is paged into memory. In the early 2000's I worked on systems that made heavy use of mmap. In constrained ("dev") environments with slow disks, you could be blocked for several seconds...
This branch of the discussion is is about dereferencing on multiple threads concurrently. That doesn't block the application, each mmap'd dereference only blocks its own thread (same as doing read()).
In my own measurements with NVMe RAID, doing this works very well on Linux for storage I/O.
I was getting similar performance to io_uring with O_DIRECT, and faster performance when the data is likely to be in the page cache on multiple runs, because the multi-threaded mmap method shares the kernel page cache without copying data.
To measure this, replace the read() calls in the libuv thread pool function with single-byte dereferences, mmap a file, and call a lot of libuv async reads. That will make libuv do the dereferences in its thread pool and return to the main application thread having fetched the relevant pages. Make sure libuv is configured to use enough threads, as it doesn't use enough by default.
All modern LLMs seem to prefer XML to other structured markup. It might be because there's so much HTML in the training set, or because it has more redundancy baked in which makes it easier for models to parse.
This is especially efficient when you have multiple pieces of content. You can encapsulate each piece of content into distinct arbitrary XML elements and then refer to them later in your prompt by the arbitrary tag.
In my experience, it's xml-ish and HTML can be described the same way. The relevant strength here is the forgiving nature of parsing tag-delimited content. The XML is usually relatively shallow, and doesn't take advantage of any true XML features, that I know of.
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I can’t speak specifically to duplicate foreign key errors but I possibly fixed that bug via a fix to parallel dump/restore in the 12-13 era. It would manifest as a dump that would fail on restore with errors related to schema dependencies (trying to restore database objects out-of-order).
Is it that hard to implement? Supporting an additional UUID version in PostgreSQL sounds like the most trivial change to implement (compared to anything that touches core backend, table management, replication, query schedulling, and so on).
The patch is already written, it's on that page. The bottleneck in Postgres is reviewer bandwidth which is why it's been moved out of several commitfests.
I don't think reviewer bandwidth is the main issue for this patch. It's a 200-line change (considering C code, there's more in docs/tests), and the code is not overly complicated / sensitive (in the sense that it's very isolated and unlikely to break random stuff).
For me the main challenge was that it's still considered a draft (AFAIK). It may be unlikely to change, but if it does I'd rather not have to deal with persistent UUIDv7 data generated per some previous spec.
Also, if I really want/need UUIDv7, it's not that hard to create an extension that generates UUID in arbitrary ways, including the proposed v7.
It's slightly different from recommendations by draft RFC version (there's no counter), but fully within spec requirements. From practical point there's no difference at all.
