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-rw-r--r--doc/plugins/write/external.mdwn6
1 files changed, 5 insertions, 1 deletions
diff --git a/doc/plugins/write/external.mdwn b/doc/plugins/write/external.mdwn
index ca30dd229..3612dd9c3 100644
--- a/doc/plugins/write/external.mdwn
+++ b/doc/plugins/write/external.mdwn
@@ -78,6 +78,9 @@ example, make an RPC call to `inject`. Pass it named parameters "name" and
"Ikiwiki::rcs_update" and "call" is the RPC call ikiwiki will make whenever
that function is run.
+If the RPC call is memoizable, you can also pass a "memoize" parameter, set
+to 1.
+
## Limitations of XML RPC
Since XML RPC can't pass around references to objects, it can't be used
@@ -112,7 +115,8 @@ number of calls.
Injecting a replacement for a commonly called ikiwiki function
could result in a lot more RPC calls than expected and slow
eveything down. `pagetitle`, for instance, is called about 100 times
-per page build.
+per page build. Memoizing injected functions whenever possible is a very
+good idea.
In general, use common sense, and your external plugin will probably
perform ok.