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Open Library Search slowdown, Oct 20, 00:30 UTC

Incident #2 · lasted 20 min · automatic post-mortem from stored checks

What happened

Open Library Search responded slowly: 3 checks during the incident, peaking at 12379 ms against a 7-day median of 1159 ms (10.7× normal).

Was it just this API?

0 other incident(s) overlapped, and 1 other API(s) failed at least one check in the same window, so this may have been a wider or network-level problem.

Response time, one hour either side

1361790784539023:3000:4001:50

Shaded band = incident window. Red dots = failed checks.

Recovery: the first passing check closed the incident.

Raw checks

23:30OK 2002044 ms
23:40OK 200715 ms
23:50OK 2001108 ms
23:57OK 2001340 ms
00:00OK 2001148 ms
00:10OK 200985 ms
00:20OK 200917 ms
00:30OK 20012379 ms
00:40OK 2002517 ms
00:50OK 2001174 ms
01:00OK 2003536 ms
01:10OK 2001471 ms
01:15OK 2001415 ms
01:20OK 200735 ms
01:30OK 200872 ms
01:37OK 2001339 ms
01:37OK 2001177 ms
01:38OK 200827 ms
01:40OK 200571 ms
01:50OK 200983 ms

Measured from a single server in Sweden every 10 minutes. See Open Library Search status.