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## App Engine Datastore NDB Cache Samples | ||
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[![Open in Cloud Shell][shell_img]][shell_link] | ||
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[shell_img]: http://gstatic.com/cloudssh/images/open-btn.png | ||
[shell_link]: https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/GoogleCloudPlatform/python-docs-samples&page=editor&open_in_editor=appengine/standard/ndb/cache/README.md | ||
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This contains snippets used in the NDB cache documentation, demonstrating | ||
various operations on ndb caches. | ||
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<!-- auto-doc-link --> | ||
These samples are used on the following documentation page: | ||
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> https://cloud.google.com/appengine/docs/python/ndb/cache | ||
<!-- end-auto-doc-link --> |
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# Copyright 2016 Google Inc. All rights reserved. | ||
# | ||
# Licensed under the Apache License, Version 2.0 (the "License"); | ||
# you may not use this file except in compliance with the License. | ||
# You may obtain a copy of the License at | ||
# | ||
# http://www.apache.org/licenses/LICENSE-2.0 | ||
# | ||
# Unless required by applicable law or agreed to in writing, software | ||
# distributed under the License is distributed on an "AS IS" BASIS, | ||
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
# See the License for the specific language governing permissions and | ||
# limitations under the License. | ||
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from google.appengine.ext import ndb | ||
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def set_in_process_cache_policy(func): | ||
context = ndb.get_context() | ||
context.set_cache_policy(func) | ||
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def set_memcache_policy(func): | ||
context = ndb.get_context() | ||
context.set_memcache_policy(func) | ||
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def bypass_in_process_cache_for_account_entities(): | ||
context = ndb.get_context() | ||
context.set_cache_policy(lambda key: key.kind() != 'Account') | ||
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def set_datastore_policy(func): | ||
context = ndb.get_context() | ||
context.set_datastore_policy(func) | ||
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def set_memcache_timeout_policy(func): | ||
context = ndb.get_context() | ||
context.set_memcache_timeout_policy(func) | ||
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def clear_cache(): | ||
context = ndb.get_context() | ||
context.clear_cache() |
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# Copyright 2016 Google Inc. All rights reserved. | ||
# | ||
# Licensed under the Apache License, Version 2.0 (the "License"); | ||
# you may not use this file except in compliance with the License. | ||
# You may obtain a copy of the License at | ||
# | ||
# http://www.apache.org/licenses/LICENSE-2.0 | ||
# | ||
# Unless required by applicable law or agreed to in writing, software | ||
# distributed under the License is distributed on an "AS IS" BASIS, | ||
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
# See the License for the specific language governing permissions and | ||
# limitations under the License. | ||
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from google.appengine.ext import ndb | ||
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import snippets | ||
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def test_set_in_process_cache_policy(testbed): | ||
def policy(key): | ||
return 1 == 1 | ||
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snippets.set_in_process_cache_policy(policy) | ||
assert policy == ndb.get_context().get_cache_policy() | ||
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def test_set_memcache_policy(testbed): | ||
def policy(key): | ||
return 1 == 2 | ||
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snippets.set_memcache_policy(policy) | ||
assert policy == ndb.get_context().get_memcache_policy() | ||
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def test_bypass_in_process_cache_for_account_entities(testbed): | ||
context = ndb.get_context() | ||
assert context.get_cache_policy() == context.default_cache_policy | ||
snippets.bypass_in_process_cache_for_account_entities() | ||
assert context.get_cache_policy() != context.default_cache_policy | ||
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def test_set_datastore_policy(testbed): | ||
def policy(key): | ||
return key is None | ||
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snippets.set_datastore_policy(policy) | ||
assert ndb.get_context().get_datastore_policy() == policy | ||
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def test_set_memcache_timeout_policy(testbed): | ||
def policy(key): | ||
return 1 | ||
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snippets.set_memcache_timeout_policy(policy) | ||
assert ndb.get_context().get_memcache_timeout_policy() == policy | ||
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def test_clear_cache(testbed): | ||
snippets.clear_cache() |
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See https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/AUTHORING_GUIDE.md | ||
See https://github.com/GoogleCloudPlatform/python-docs-samples/blob/main/AUTHORING_GUIDE.md |
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See https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/CONTRIBUTING.md | ||
See https://github.com/GoogleCloudPlatform/python-docs-samples/blob/main/CONTRIBUTING.md |
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