Open Library Search slowdown, Oct 19, 23:20 UTC

Incident #1 · lasted 20 min · automatic post-mortem from stored checks

Slow
Open Library Searchresponses 2351 ms and 2044 ms (threshold 1500 ms)
resolved · 20 min
Oct 19, 23:20 UTC · post-mortem →

What happened

Open Library Search responded slowly: 3 checks during the incident, peaking at 2351 ms against a 7-day median of 1761 ms (1.3× 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

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

Recovery: the first passing check closed the incident.

Raw checks

23:17	OK 200	1171 ms
23:20	OK 200	2351 ms
23:30	OK 200	2044 ms
23:40	OK 200	715 ms
23:50	OK 200	1108 ms
23:57	OK 200	1340 ms
00:00	OK 200	1148 ms
00:10	OK 200	985 ms
00:20	OK 200	917 ms
00:30	OK 200	12379 ms
00:40	OK 200	2517 ms

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