## page was renamed from kresd/cache
== kresd/cache ==

[[/kr_cache_peek]]  [[/zonecut.c]]

https://github.com/CZ-NIC/knot-resolver/issues/34
   cache prefers parent-side TTL to authoritative #34

== 管理 ==

キャッシュは"kr_cache_*"インタフェースで管理される。
　KR_CACHE_PKT, KR_CACHE_RR, KR_CACHE_SIGの三種類が存在している。（ほかにもある）

$ grep KR_CACHE_ ../*.c
{{{
../cache.c:	int ret = kr_cache_peek(txn, KR_CACHE_RR, rr->owner, rr->type, &entry, timestamp);
../cache.c:	return kr_cache_insert(txn, KR_CACHE_RR, rr->owner, rr->type, &header, data);
../cache.c:	int ret = kr_cache_peek(txn, KR_CACHE_SIG, rr->owner, rr->type, &entry, timestamp);
../cache.c:	return kr_cache_insert(txn, KR_CACHE_SIG, rr->owner, covered, &header, data);
../resolve.c:		int ret = kr_cache_peek(txn, KR_CACHE_PKT, target, KNOT_RRTYPE_NS, &entry, &timestamp);
}}}

$ grep KR_CACHE_ *.c
{{{
pktcache.c:	int ret = kr_cache_peek(txn, KR_CACHE_PKT, qname, rrtype, &entry, &timestamp);
pktcache.c:		if (flags & KR_CACHE_FLAG_WCARD_PROOF) {
pktcache.c:		.flags = KR_CACHE_FLAG_NONE,
pktcache.c:		header.flags |= KR_CACHE_FLAG_WCARD_PROOF;
pktcache.c:		int cached_rank = kr_cache_peek_rank(&txn, KR_CACHE_PKT, qname, qtype, header.timestamp);
pktcache.c:	int ret = kr_cache_insert(&txn, KR_CACHE_PKT, qname, qtype, &header, data);	
rrcache.c:	if ((*flags) & KR_CACHE_FLAG_WCARD_PROOF) {
rrcache.c:		return commit_rrsig(baton, rank, KR_CACHE_FLAG_NONE, rr);
rrcache.c:		int cached_rank = kr_cache_peek_rank(baton->txn, KR_CACHE_RR, rr->owner, rr->type, baton->timestamp);
rrcache.c:	uint8_t flags = KR_CACHE_FLAG_NONE;
rrcache.c:		flags |= KR_CACHE_FLAG_WCARD_PROOF;
}}}


-- ToshinoriMaeno <<DateTime(2016-04-23T22:05:07+0900)>>