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singleflight: add OnceGroup struct #96

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kevinburke opened this issue May 12, 2018 · 0 comments
Open

singleflight: add OnceGroup struct #96

kevinburke opened this issue May 12, 2018 · 0 comments

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@kevinburke
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kevinburke commented May 12, 2018 •
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OnceGroup.Do would have the same semantics as Group.Do, but caches and returns the first computed result.

Example: looking up the user id in /etc/passwd for a given username; something you might need to do once and not more than that, since (if) you don't expect the value to change during the life of the process.
@kevinburke kevinburke changed the title singleflight: add DoOnce function singleflight: add OnceGroup struct May 13, 2018
kevinburke added a commit to kevinburke/groupcache that referenced this issue May 13, 2018
@kevinburke
singleflight: add OnceGroup
096a0f1 
OnceGroup.Do has the same semantics as Group.Do, but caches and
returns the first computed result if called sequentially.

Fixes golang#96.
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