From: Bert Hubert <bert.hubert@netherlabs.nl>
Date: Wed, 29 Mar 2006 18:38:16 +0000 (+0000)
Subject: it is probable we plough through the cache too much - add simple check to prevent... 
X-Git-Tag: rec-3-0~109
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=7004b0d50ad4b70f6aaccf66a09f5618a9bac987;p=pdns

it is probable we plough through the cache too much - add simple check to prevent *lowering* ttds uncessarily, which should leave the cache alone a bit more


git-svn-id: svn://svn.powerdns.com/pdns/trunk/pdns@644 d19b8d6e-7fed-0310-83ef-9ca221ded41b
---

diff --git a/pdns/recursor_cache.cc b/pdns/recursor_cache.cc
index 7483e10c6..686f0e541 100644
--- a/pdns/recursor_cache.cc
+++ b/pdns/recursor_cache.cc
@@ -132,8 +132,10 @@ void MemRecursorCache::replace(const string &qname, const QType& qt,  const set<
       range=equal_range(ce.d_records.begin(), ce.d_records.end(), dr);
       
       if(range.first != range.second) {
-	for(vector<StoredRecord>::iterator j=range.first ; j!=range.second; ++j)
-	  j->d_ttd=i->ttl;
+	for(vector<StoredRecord>::iterator j=range.first ; j!=range.second; ++j) {
+	  if(i->ttl > j->d_ttd)
+	    j->d_ttd=i->ttl;
+	}
       }
       else {
 	ce.d_records.push_back(dr);