Event bus service does not use analytics Kafka though.
Ja. Good to know.
What are the use cases that make the system tier-1?
On Fri, Nov 18, 2016 at 9:35 AM, Andrew Otto <aotto(a)wikimedia.org> wrote:
Event bus service does not use analytics Kafka though.
I would argue that
analytics Kafka is tier 1
On Nov 18, 2016, at 12:12, Gabriel Wicke <gwicke(a)wikimedia.org> wrote:
EventBus is definitely tier-1. It provides a communication backbone that
is used for reliable event processing. Delays in update processing cause
directly user-visible issues like outdated information, performance
regressions in VisualEditor & other use cases, and unavailability of public
event streams. Timely processing of events like revision deletions is
security-relevant.
On Fri, Nov 18, 2016 at 9:07 AM, Nuria Ruiz <nuria(a)wikimedia.org> wrote:
Team:
(services cc-ed)
We need to define whether kafka on the analytics cluster is a tier-1 or
tier-2 system in order to decide the level of support. At this time an
issue with a kafka host pages the whole ops team and I am not sure whether
this is needed.
From the standpoint of 'anything' analytics kafka is a tier-2 piece on
infrastructure (
https://wikitech.wikimedia.org/wiki/Analytics/Tier2). I
am not sure as to the EventBus use cases ,though. Can the services team
detail the use cases for EventBus that would make it tier-1?
I want to make sure we are all in the same page when it comes to define
something as tier-1: tier-1 means that is as important as the database or
varnish or any of the core pieces of infrastructure that allow us to
operate. Powering a feature that users use, like, say, a part of the
Android application doesn't make a service tier-1, it just makes it
user-facing. That does not necessarily imply that it needs 24/7 support.
Could services team let us know as to the clients of Event Bus as of now
that would make it a tier-1 service?
Thanks,
Nuria
--
Gabriel Wicke
Principal Engineer, Wikimedia Foundation
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