Add note about SQL index.

2015-05-28 13:16:45 -03:00 · 2015-05-28 13:16:45 -03:00 · 11197f6180
commit 11197f6180
parent a35a10db0d
1 changed files with 4 additions and 0 deletions
--- a/README.md
+++ b/README.md
@ -104,6 +104,10 @@ though, please bear in mind that:

  * The Redis backend is not set to expire sessions yet.

+  * The `persistent` backend does not automatically create an
+    index for the auth ID.  Thus, by default the
+    `deleteAllSessionsOfAuthId` operation will take linear time.
+

 ## Background