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Brad Fitzpatrick 61d3b2db62 net: coalesce duplicate in-flight DNS lookups
In Issue 5625, Russ says: "We should at least have a cache of
inflight lookups, so that 100 simultaneous dials of one host
name don't do the work 100x. That's easy and (assume we forget
the answer once they all get it) doesn't pose any consistency
problems. It just merges simultaneous work."

This brings in singleflight (unexported) from Google /
Camlistore, but without its tests. Maybe we should put it
somewhere in the standard library. But not now.

Update #5625

R=golang-dev, iant, cespare, rsc, dave, rogpeppe, remyoudompheng
CC=golang-dev
https://golang.org/cl/10079043
2013-06-14 08:59:43 -07:00
api api: update next.txt 2013-06-03 03:11:57 +08:00
doc doc: add go1.1.1 to the release notes 2013-06-13 12:43:26 +10:00
include build: add intptr typedef for Plan 9 2013-06-04 16:21:04 -07:00
lib godoc: always use local jQuery script 2013-06-07 10:46:56 +10:00
misc misc/vim: Adding flag-guarding for Vim commands 2013-06-13 15:07:09 +10:00
src net: coalesce duplicate in-flight DNS lookups 2013-06-14 08:59:43 -07:00
test cmd/gc: save local var list before inlining 2013-06-11 20:23:21 -07:00
.hgignore hgignore: cleanup obsolete entries. 2013-06-02 11:36:09 +02:00
.hgtags tag go1.1.1 2013-06-13 12:52:02 +10:00
AUTHORS A+C: John Shahid (individual CLA) 2013-05-29 11:18:05 -04:00
CONTRIBUTORS C: add Josh Hoak (Google CLA). 2013-06-12 14:05:13 +10:00
favicon.ico godoc: update favicon 2012-10-11 17:02:36 +11:00
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