Finally, some sanity and perfectly acceptable SLO downtimes for ... a FREE SERVICE TO THE WORLD.
Thad https://www.linkedin.com/in/thadguidry/ https://calendly.com/thadguidry/ On Thu, Feb 2, 2023 at 2:15 AM Ryan Kemper <[email protected]> wrote: > Hi all, > > As a part of the ongoing work to ensure that Wikidata Query Service (WDQS) > continues to be available and functional for users, *we have implemented > a Service Level Objective (SLO) for WDQS uptime*. We currently aim to > maintain a *95% uptime* based on a *90 day rolling window*, in keeping > with Wikimedia Foundation (WMF) SLO reporting standards > <https://wikitech.wikimedia.org/wiki/SLO#SLO_reporting>. > > Effectively this means that the WMF will be responsible, along with > Wikimedia Deutschland (WMDE), for *making sure that WDQS is available at > least 95% of the time*, which equates to the following acceptable amounts > of downtime: > > *Daily*: 1h 12m > *Weekly*: 8h 24m > *Monthly*: 1d 12h 13m 27s > *Quarterly*: 4d 12h 40m 22s > *Yearly*: 18d 2h 41m 28s > > It also means that we can focus on other priorities if we are meeting this > SLO. We believe that this should help formalize our commitment to ensuring > WDQS is available for users while still making time to work on long-term > scaling initiatives for the future of WDQS. It will also formalize the > limitations of what we are able to support, allowing us to avoid being > overly reactive to fluctuations in inherently unstable system performance > in a way that has previously required us to wake people up on weekends to > resolve. > > The current status of the SLO is available here: > https://grafana.wikimedia.org/d/l-3CMlN4z/wdqs-uptime-slo?orgId=1 > The gauge (top left) indicates the current WDQS uptime over the past 90 > days. The WDQS Uptime SLO graph (top right) indicates the historic > point-in-time uptime based on user traffic, with the red horizontal line at > our SLO of 95%. For specifics on how our uptime metric is computed, see our > WDQS > SLO documentation > <https://wikitech.wikimedia.org/wiki/SLO/WDQS#Service_Level_Indicators_(SLIs)> > . > > As always, we appreciate your patience as we work on improving WDQS. If > you have further questions about the new uptime SLO, please don’t hesitate > to respond to this email. > > Best, > Ryan Kemper > Site Reliability Engineer, Search Platform > > > _______________________________________________ > Wikidata mailing list -- [email protected] > Public archives at > https://lists.wikimedia.org/hyperkitty/list/[email protected]/message/YECTQKX4OIPACDOWXEYNMBKRNKMH4YBK/ > To unsubscribe send an email to [email protected] >
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