1 files changed, 4 insertions, 0 deletions
diff --git a/lib/PublicInbox/Inbox.pm b/lib/PublicInbox/Inbox.pm
index 58651687..52aece7c 100644
--- a/lib/PublicInbox/Inbox.pm
+++ b/lib/PublicInbox/Inbox.pm
@@ -201,6 +201,10 @@ sub search {
          (eval { $srch->xdb }) ? $srch : undef;
  }
  
+# isrch is preferred for read-only interfaces if available since it
+# reduces kernel cache and FD overhead
+sub isrch { $_[0]->{isrch} // search($_[0]) }
+
  sub over {
          $_[0]->{over} //= eval {
                  my $srch = $_[0]->{search} //= eval {