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authorRasmus Dahlberg <rasmus@mullvad.net>2021-12-09 11:14:31 +0100
committerRasmus Dahlberg <rasmus@mullvad.net>2021-12-09 11:14:31 +0100
commit89f0a41e8baefddf2c6962a8f0eee71dfd124d21 (patch)
tree85d7723d8e66225d9fe02304b0bac4c9f00c8eac /issues/add-multi-instance-support.md
parente74021bee14cdc6a5aa22ddc2068c2f72dfe277f (diff)
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+**Title:** Add multi-instance support </br>
+**Date:** 2021-12-09 </br>
+
+# Summary
+Add support for multiple active sigsum-log-go instances for the same log.
+
+# Description
+A sigsum log accepts add-cosignature requests to make the final cosigned tree
+head available. Right now a single active sigsum-log-go instance is assumed per
+log, so that there is no need to coordinate cosigned tree heads among instances.
+
+Some log operators will likely want to run multiple instances of both the
+Trillian components and sigsum-log-go, backed by a managed data base setup.
+Trillian supports this, but sigsum-log-go does not due to lack of coordination.
+
+This issue requires both design considerations and an implementation of the
+`StateManager` interface to support multi-instance setups of sigsum-log-go.