filter/dscache/doc.go - Issue 2021753002: Change gae to apache 2 license.

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Side by Side Diff: filter/dscache/doc.go

Issue 2021753002: Change gae to apache 2 license. (Closed) Base URL: https://github.com/luci/gae.git@master

Patch Set: Created 4 years, 6 months ago

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1 // Copyright 2015 The Chromium Authors. All rights reserved.	1 // Copyright 2015 The LUCI Authors. All rights reserved.

2 // Use of this source code is governed by a BSD-style license that can be	2 // Use of this source code is governed under the Apache License, Version 2.0

3 // found in the LICENSE file.	3 // that can be found in the LICENSE file.

4	4

5 // Package dscache provides a transparent cache for RawDatastore which is	5 // Package dscache provides a transparent cache for RawDatastore which is

6 // backed by Memcache.	6 // backed by Memcache.

7 //	7 //

8 // Inspiration	8 // Inspiration

9 //	9 //

10 // Although this is not a port of any particular implementation, it takes	10 // Although this is not a port of any particular implementation, it takes

11 // inspiration from these fine libraries:	11 // inspiration from these fine libraries:

12 // - https://cloud.google.com/appengine/docs/python/ndb/	12 // - https://cloud.google.com/appengine/docs/python/ndb/

13 // - https://github.com/qedus/nds	13 // - https://github.com/qedus/nds

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177 //	177 //

178 // Note that flusing memcache of a running application may also induce this	178 // Note that flusing memcache of a running application may also induce this

179 // race. Flushes should be performed with this concern in mind.	179 // race. Flushes should be performed with this concern in mind.

180 //	180 //

181 // TODO: A potential mitigation to lock eviction poisoning is to use memcache	181 // TODO: A potential mitigation to lock eviction poisoning is to use memcache

182 // Statistics to identify the oldest memcache item and use that age to bound	182 // Statistics to identify the oldest memcache item and use that age to bound

183 // the lifetime of cached datastore entries. This would cause dscache items	183 // the lifetime of cached datastore entries. This would cause dscache items

184 // created around the time of a flush to expire quickly (instead of never),	184 // created around the time of a flush to expire quickly (instead of never),

185 // bounding the period of time when poisoned data may reside in the cache.	185 // bounding the period of time when poisoned data may reside in the cache.

186 package dscache	186 package dscache

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