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core: print a verbose log when hit cache

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This commit is contained in:
Micooz 2017-09-18 22:41:56 +08:00
parent 82b1166b83
commit 2581da27c9
1 changed files with 4 additions and 1 deletions
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5
src/core/dns-cache.js
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@ -1,5 +1,6 @@
import dns from 'dns';
import net from 'net';
import {logger} from '../utils';
export const DNS_DEFAULT_EXPIRE = 3600000;
@ -48,9 +49,11 @@ export class DNSCache {
this._put(hostname, address);
} else {
const [addr, expire] = DNSCache._pool[hostname];
if (this._now() >= expire) {
const now = this._now();
if (now >= expire) {
delete DNSCache._pool[hostname];
}
logger.verbose(`[dns-cache] hit: hostname=${hostname} resolved=${addr} ttl=${expire - now}ms`);
address = addr;
}
return address;