Do not cache DNS responses when cache size is 0

2017-07-04 23:18:15 +02:00 · 2017-07-04 23:18:15 +02:00 · f0ded6b775
parent 1f08d9a648
commit f0ded6b775
1 changed files with 2 additions and 1 deletions
--- a/scrapy/resolver.py
+++ b/scrapy/resolver.py
@ -22,7 +22,8 @@ class CachingThreadedResolver(ThreadedResolver):
        # to enforce Scrapy's DNS_TIMEOUT setting's value
        timeout = (self.timeout,)
        d = super(CachingThreadedResolver, self).getHostByName(name, timeout)
-        d.addCallback(self._cache_result, name)
+        if dnscache.limit:
+            d.addCallback(self._cache_result, name)
        return d

    def _cache_result(self, result, name):