A hit opens the variant file and nothing else: its content type comes
from the file's first bytes, and a file in no output format is a miss.
Its access time and hit count, and the access time of a cached source a
miss uses, are handed without waiting to the goroutine that wrote late
counts, which now writes every count and access time once a second;
each kind of access time waits in a channel of 10,000 that drops the
rest. checkNegativeCache leaves expired rows to CleanExpired. The .meta
files, metaCache, Lookup and golang-lru go, with their tests. make bench
runs a parallel cache hit benchmark with Go on the host, outside make
check.
Model: opus-5-5
TestService_Get_ReturnsByItsDeadline failed on a busy host because its
request, past its deadline, still waited to write its miss count, a write
with no deadline; in pixad that write waits for the one database
connection every request shares. Each count write now keeps the request's
deadline but not its cancellation. A count not written by then is kept in
memory, where Stats includes it, and one goroutine of the cache writes
those counts one UPDATE at a time, and once more at shutdown before the
database closes. The test phase also runs go test with -parallel 4: on a
busy host, as many tests at once as there are CPUs wait so long to be
scheduled that a timed request can fail.
Model: opus-5-5
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