CODEWITHSUNDEEP
google-app-enginegomemcached
rsteckler
rsteckler

Reputation: 305

Memcache item with any Expiration expires immediately on Google App Engine with Go

This code snippet:

err = memcache.JSON.Set(c, &memcache.Item{
    Key:        mkey,
    Object:     &total,
    Expiration: 600,
})

followed by a second call with this:

_, err := memcache.JSON.Get(c, mkey, &total);

...results in a cache miss.
Simply changing the Expiration value to 0 results in cache hits, but then I can't control when the items expire.

Am I misreading how expiration is supposed to work?

Upvotes: 1

Views: 1235

Answers (1)

VonC
VonC

Reputation: 1323553

Since the memcache.Item does use Time.Duration (nanosecond), it is best to specify the Expiration field using seconds:

 time.Second * 600

The memcache doc mentions:

// Expiration is the maximum duration that the item will stay
// in the cache.
// The zero value means the Item has no expiration time.
// Subsecond precision is ignored.
// This is not set when getting items.
Expiration time.Duration

Upvotes: 4

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