1 files changed, 17 insertions, 0 deletions

diff --git a/issues/add-multi-instance-support.md b/issues/add-multi-instance-support.md
new file mode 100644
index 0000000..ce32755
--- /dev/null
+++ b/issues/add-multi-instance-support.md
@@ -0,0 +1,17 @@
+**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.