diff --git a/appengine/standard/ndb/cache/README.md b/appengine/standard/ndb/cache/README.md
new file mode 100644
index 000000000000..a702c6478195
--- /dev/null
+++ b/appengine/standard/ndb/cache/README.md
@@ -0,0 +1,16 @@
+## App Engine Datastore NDB Cache Samples
+
+[![Open in Cloud Shell][shell_img]][shell_link]
+
+[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
+
+This contains snippets used in the NDB cache documentation, demonstrating
+various operations on ndb caches.
+
+<!-- auto-doc-link -->
+These samples are used on the following documentation page:
+
+> https://cloud.google.com/appengine/docs/python/ndb/cache
+
+<!-- end-auto-doc-link -->
diff --git a/appengine/standard/ndb/cache/snippets.py b/appengine/standard/ndb/cache/snippets.py
new file mode 100644
index 000000000000..391ad3f89a04
--- /dev/null
+++ b/appengine/standard/ndb/cache/snippets.py
@@ -0,0 +1,45 @@
+# 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.
+
+from google.appengine.ext import ndb
+
+
+def set_in_process_cache_policy(func):
+    context = ndb.get_context()
+    context.set_cache_policy(func)
+
+
+def set_memcache_policy(func):
+    context = ndb.get_context()
+    context.set_memcache_policy(func)
+
+
+def bypass_in_process_cache_for_account_entities():
+    context = ndb.get_context()
+    context.set_cache_policy(lambda key: key.kind() != 'Account')
+
+
+def set_datastore_policy(func):
+    context = ndb.get_context()
+    context.set_datastore_policy(func)
+
+
+def set_memcache_timeout_policy(func):
+    context = ndb.get_context()
+    context.set_memcache_timeout_policy(func)
+
+
+def clear_cache():
+    context = ndb.get_context()
+    context.clear_cache()
diff --git a/appengine/standard/ndb/cache/snippets_test.py b/appengine/standard/ndb/cache/snippets_test.py
new file mode 100644
index 000000000000..257525895ee0
--- /dev/null
+++ b/appengine/standard/ndb/cache/snippets_test.py
@@ -0,0 +1,60 @@
+# 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.
+
+from google.appengine.ext import ndb
+
+import snippets
+
+
+def test_set_in_process_cache_policy(testbed):
+    def policy(key):
+        return 1 == 1
+
+    snippets.set_in_process_cache_policy(policy)
+    assert policy == ndb.get_context().get_cache_policy()
+
+
+def test_set_memcache_policy(testbed):
+    def policy(key):
+        return 1 == 2
+
+    snippets.set_memcache_policy(policy)
+    assert policy == ndb.get_context().get_memcache_policy()
+
+
+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
+
+
+def test_set_datastore_policy(testbed):
+    def policy(key):
+        return key is None
+
+    snippets.set_datastore_policy(policy)
+    assert ndb.get_context().get_datastore_policy() == policy
+
+
+def test_set_memcache_timeout_policy(testbed):
+    def policy(key):
+        return 1
+
+    snippets.set_memcache_timeout_policy(policy)
+    assert ndb.get_context().get_memcache_timeout_policy() == policy
+
+
+def test_clear_cache(testbed):
+    snippets.clear_cache()
diff --git a/datalabeling/AUTHORING_GUIDE.md b/datalabeling/AUTHORING_GUIDE.md
index 55c97b32f4c1..f2725aaf3f43 100644
--- a/datalabeling/AUTHORING_GUIDE.md
+++ b/datalabeling/AUTHORING_GUIDE.md
@@ -1 +1 @@
-See https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/AUTHORING_GUIDE.md
\ No newline at end of file
+See https://github.com/GoogleCloudPlatform/python-docs-samples/blob/main/AUTHORING_GUIDE.md
diff --git a/datalabeling/CONTRIBUTING.md b/datalabeling/CONTRIBUTING.md
index 34c882b6f1a3..354af3073ee7 100644
--- a/datalabeling/CONTRIBUTING.md
+++ b/datalabeling/CONTRIBUTING.md
@@ -1 +1 @@
-See https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/CONTRIBUTING.md
\ No newline at end of file
+See https://github.com/GoogleCloudPlatform/python-docs-samples/blob/main/CONTRIBUTING.md
diff --git a/datalabeling/snippets/noxfile.py b/datalabeling/snippets/noxfile.py
deleted file mode 100644
index 1062eecd5679..000000000000
--- a/datalabeling/snippets/noxfile.py
+++ /dev/null
@@ -1,312 +0,0 @@
-# Copyright 2022 Google LLC
-#
-# 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.
-
-from __future__ import print_function
-
-import glob
-import os
-from pathlib import Path
-import sys
-from typing import Callable, Dict, List, Optional
-
-import nox
-
-# WARNING - WARNING - WARNING - WARNING - WARNING
-# WARNING - WARNING - WARNING - WARNING - WARNING
-#           DO NOT EDIT THIS FILE EVER!
-# WARNING - WARNING - WARNING - WARNING - WARNING
-# WARNING - WARNING - WARNING - WARNING - WARNING
-
-BLACK_VERSION = "black==22.3.0"
-ISORT_VERSION = "isort==5.10.1"
-
-# Copy `noxfile_config.py` to your directory and modify it instead.
-
-# `TEST_CONFIG` dict is a configuration hook that allows users to
-# modify the test configurations. The values here should be in sync
-# with `noxfile_config.py`. Users will copy `noxfile_config.py` into
-# their directory and modify it.
-
-TEST_CONFIG = {
-    # You can opt out from the test for specific Python versions.
-    "ignored_versions": [],
-    # Old samples are opted out of enforcing Python type hints
-    # All new samples should feature them
-    "enforce_type_hints": False,
-    # An envvar key for determining the project id to use. Change it
-    # to 'BUILD_SPECIFIC_GCLOUD_PROJECT' if you want to opt in using a
-    # build specific Cloud project. You can also use your own string
-    # to use your own Cloud project.
-    "gcloud_project_env": "GOOGLE_CLOUD_PROJECT",
-    # 'gcloud_project_env': 'BUILD_SPECIFIC_GCLOUD_PROJECT',
-    # If you need to use a specific version of pip,
-    # change pip_version_override to the string representation
-    # of the version number, for example, "20.2.4"
-    "pip_version_override": None,
-    # A dictionary you want to inject into your test. Don't put any
-    # secrets here. These values will override predefined values.
-    "envs": {},
-}
-
-
-try:
-    # Ensure we can import noxfile_config in the project's directory.
-    sys.path.append(".")
-    from noxfile_config import TEST_CONFIG_OVERRIDE
-except ImportError as e:
-    print("No user noxfile_config found: detail: {}".format(e))
-    TEST_CONFIG_OVERRIDE = {}
-
-# Update the TEST_CONFIG with the user supplied values.
-TEST_CONFIG.update(TEST_CONFIG_OVERRIDE)
-
-
-def get_pytest_env_vars() -> Dict[str, str]:
-    """Returns a dict for pytest invocation."""
-    ret = {}
-
-    # Override the GCLOUD_PROJECT and the alias.
-    env_key = TEST_CONFIG["gcloud_project_env"]
-    # This should error out if not set.
-    ret["GOOGLE_CLOUD_PROJECT"] = os.environ[env_key]
-
-    # Apply user supplied envs.
-    ret.update(TEST_CONFIG["envs"])
-    return ret
-
-
-# DO NOT EDIT - automatically generated.
-# All versions used to test samples.
-ALL_VERSIONS = ["3.7", "3.8", "3.9", "3.10"]
-
-# Any default versions that should be ignored.
-IGNORED_VERSIONS = TEST_CONFIG["ignored_versions"]
-
-TESTED_VERSIONS = sorted([v for v in ALL_VERSIONS if v not in IGNORED_VERSIONS])
-
-INSTALL_LIBRARY_FROM_SOURCE = os.environ.get("INSTALL_LIBRARY_FROM_SOURCE", False) in (
-    "True",
-    "true",
-)
-
-# Error if a python version is missing
-nox.options.error_on_missing_interpreters = True
-
-#
-# Style Checks
-#
-
-
-def _determine_local_import_names(start_dir: str) -> List[str]:
-    """Determines all import names that should be considered "local".
-
-    This is used when running the linter to insure that import order is
-    properly checked.
-    """
-    file_ext_pairs = [os.path.splitext(path) for path in os.listdir(start_dir)]
-    return [
-        basename
-        for basename, extension in file_ext_pairs
-        if extension == ".py"
-        or os.path.isdir(os.path.join(start_dir, basename))
-        and basename not in ("__pycache__")
-    ]
-
-
-# Linting with flake8.
-#
-# We ignore the following rules:
-#   E203: whitespace before ‘:’
-#   E266: too many leading ‘#’ for block comment
-#   E501: line too long
-#   I202: Additional newline in a section of imports
-#
-# We also need to specify the rules which are ignored by default:
-# ['E226', 'W504', 'E126', 'E123', 'W503', 'E24', 'E704', 'E121']
-FLAKE8_COMMON_ARGS = [
-    "--show-source",
-    "--builtin=gettext",
-    "--max-complexity=20",
-    "--import-order-style=google",
-    "--exclude=.nox,.cache,env,lib,generated_pb2,*_pb2.py,*_pb2_grpc.py",
-    "--ignore=E121,E123,E126,E203,E226,E24,E266,E501,E704,W503,W504,I202",
-    "--max-line-length=88",
-]
-
-
-@nox.session
-def lint(session: nox.sessions.Session) -> None:
-    if not TEST_CONFIG["enforce_type_hints"]:
-        session.install("flake8", "flake8-import-order")
-    else:
-        session.install("flake8", "flake8-import-order", "flake8-annotations")
-
-    local_names = _determine_local_import_names(".")
-    args = FLAKE8_COMMON_ARGS + [
-        "--application-import-names",
-        ",".join(local_names),
-        ".",
-    ]
-    session.run("flake8", *args)
-
-
-#
-# Black
-#
-
-
-@nox.session
-def blacken(session: nox.sessions.Session) -> None:
-    """Run black. Format code to uniform standard."""
-    session.install(BLACK_VERSION)
-    python_files = [path for path in os.listdir(".") if path.endswith(".py")]
-
-    session.run("black", *python_files)
-
-
-#
-# format = isort + black
-#
-
-
-@nox.session
-def format(session: nox.sessions.Session) -> None:
-    """
-    Run isort to sort imports. Then run black
-    to format code to uniform standard.
-    """
-    session.install(BLACK_VERSION, ISORT_VERSION)
-    python_files = [path for path in os.listdir(".") if path.endswith(".py")]
-
-    # Use the --fss option to sort imports using strict alphabetical order.
-    # See https://pycqa.github.io/isort/docs/configuration/options.html#force-sort-within-sections
-    session.run("isort", "--fss", *python_files)
-    session.run("black", *python_files)
-
-
-#
-# Sample Tests
-#
-
-
-PYTEST_COMMON_ARGS = ["--junitxml=sponge_log.xml"]
-
-
-def _session_tests(
-    session: nox.sessions.Session, post_install: Callable = None
-) -> None:
-    # check for presence of tests
-    test_list = glob.glob("**/*_test.py", recursive=True) + glob.glob(
-        "**/test_*.py", recursive=True
-    )
-    test_list.extend(glob.glob("**/tests", recursive=True))
-
-    if len(test_list) == 0:
-        print("No tests found, skipping directory.")
-        return
-
-    if TEST_CONFIG["pip_version_override"]:
-        pip_version = TEST_CONFIG["pip_version_override"]
-        session.install(f"pip=={pip_version}")
-    """Runs py.test for a particular project."""
-    concurrent_args = []
-    if os.path.exists("requirements.txt"):
-        if os.path.exists("constraints.txt"):
-            session.install("-r", "requirements.txt", "-c", "constraints.txt")
-        else:
-            session.install("-r", "requirements.txt")
-        with open("requirements.txt") as rfile:
-            packages = rfile.read()
-
-    if os.path.exists("requirements-test.txt"):
-        if os.path.exists("constraints-test.txt"):
-            session.install("-r", "requirements-test.txt", "-c", "constraints-test.txt")
-        else:
-            session.install("-r", "requirements-test.txt")
-        with open("requirements-test.txt") as rtfile:
-            packages += rtfile.read()
-
-    if INSTALL_LIBRARY_FROM_SOURCE:
-        session.install("-e", _get_repo_root())
-
-    if post_install:
-        post_install(session)
-
-    if "pytest-parallel" in packages:
-        concurrent_args.extend(["--workers", "auto", "--tests-per-worker", "auto"])
-    elif "pytest-xdist" in packages:
-        concurrent_args.extend(["-n", "auto"])
-
-    session.run(
-        "pytest",
-        *(PYTEST_COMMON_ARGS + session.posargs + concurrent_args),
-        # Pytest will return 5 when no tests are collected. This can happen
-        # on travis where slow and flaky tests are excluded.
-        # See http://doc.pytest.org/en/latest/_modules/_pytest/main.html
-        success_codes=[0, 5],
-        env=get_pytest_env_vars(),
-    )
-
-
-@nox.session(python=ALL_VERSIONS)
-def py(session: nox.sessions.Session) -> None:
-    """Runs py.test for a sample using the specified version of Python."""
-    if session.python in TESTED_VERSIONS:
-        _session_tests(session)
-    else:
-        session.skip(
-            "SKIPPED: {} tests are disabled for this sample.".format(session.python)
-        )
-
-
-#
-# Readmegen
-#
-
-
-def _get_repo_root() -> Optional[str]:
-    """Returns the root folder of the project."""
-    # Get root of this repository. Assume we don't have directories nested deeper than 10 items.
-    p = Path(os.getcwd())
-    for i in range(10):
-        if p is None:
-            break
-        if Path(p / ".git").exists():
-            return str(p)
-        # .git is not available in repos cloned via Cloud Build
-        # setup.py is always in the library's root, so use that instead
-        # https://github.com/googleapis/synthtool/issues/792
-        if Path(p / "setup.py").exists():
-            return str(p)
-        p = p.parent
-    raise Exception("Unable to detect repository root.")
-
-
-GENERATED_READMES = sorted([x for x in Path(".").rglob("*.rst.in")])
-
-
-@nox.session
-@nox.parametrize("path", GENERATED_READMES)
-def readmegen(session: nox.sessions.Session, path: str) -> None:
-    """(Re-)generates the readme for a sample."""
-    session.install("jinja2", "pyyaml")
-    dir_ = os.path.dirname(path)
-
-    if os.path.exists(os.path.join(dir_, "requirements.txt")):
-        session.install("-r", os.path.join(dir_, "requirements.txt"))
-
-    in_file = os.path.join(dir_, "README.rst.in")
-    session.run(
-        "python", _get_repo_root() + "/scripts/readme-gen/readme_gen.py", in_file
-    )