calmera commented on code in PR #12742:
URL: https://github.com/apache/kafka/pull/12742#discussion_r1062611257
##########
docs/streams/developer-guide/processor-api.html:
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@@ -396,6 +397,21 @@ <h2>
</ul>
</p>
</div>
+ <div class="section" id="readonly-state-stores">
+ <span
id="streams-developer-guide-state-store-readonly"></span><h3><a
class="toc-backref" href="#id12">ReadOnly State Stores</a><a class="headerlink"
href="#readonly-state-stores" title="Permalink to this headline"></a></h3>
+ <p>The changelog topic for a fault-tolerant state store can
also be used to perform lookups against. It is
+ crucial to understand that there can be only one writer to
this state store, but there can be multiple
+ readers.</p>
+
+ <p>This allows you to use a readonly state store for looking
up reference data managed by another processor
+ or even another process all together. The messages within
the compacted topic may be projected (subset of data extracted)
Review Comment:
yeah, pretty sure eventually we came to that conclusion as well. Too bad
though, would have been nice for re-usability purposes.
I will change the description and that the projected stuff out.
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