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Integrate layer info cache with registry and storage

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This changeset integrates the layer info cache with the registry webapp and
storage backend. The main benefit is to cache immutable layer meta data,
reducing backend roundtrips. The cache can be configured to use either redis or
an inmemory cache.

This provides massive performance benefits for HEAD http checks on layer blobs
and manifest verification.

Signed-off-by: Stephen J Day <stephen.day@docker.com>
This commit is contained in:
Stephen J Day 2015-04-01 16:41:33 -07:00
parent a7c2dceea5
commit 6ab228f798
10 changed files with 256 additions and 24 deletions
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5
docs/storage/blobstore.go
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@ -18,8 +18,9 @@ import (
// abstraction, providing utility methods that support creating and traversing
// backend links.
type blobStore struct {
*registry
ctx context.Context
driver storagedriver.StorageDriver
pm *pathMapper
ctx context.Context
}
// exists reports whether or not the path exists. If the driver returns error