diskcache

Rationale: file-based cache in Django is essentially broken. Culling files is too costly. Large caches are forced to scan lots of files and do lots of deletes on some operations. Takes too long in the request/response cycle.

Solution: Each operation, “set” and “del” should delete at most two to ten expired keys.

Each “get” needs only check expiry and delete if needed. Make it speedy.

If only we had some kind of file-based database… we do! It’s called SQLite. For metadata and small stuff, use SQLite and for bigger things use files.

Features

Pure-Python
Developed on Python 2.7
Tested on CPython 2.6, 2.7, 3.3, 3.4, 3.5 and PyPy, PyPy3
Get full_path reference to value.
Allow storing raw data.
Small values stored in database.
Leverages SQLite native types: int, float, unicode, blob.
Thread-safe and process-safe.
Multiple eviction policies - Least-Recently-Stored - Least-Recently-Used - Least-Frequently-Used
Stampede barrier decorator.
Metadata support for “tag” to evict a group of keys at once.

Quickstart

Installing DiskCache is simple with pip:

$ pip install diskcache

You can access documentation in the interpreter with Python’s built-in help function:

>>> from diskcache import DjangoCache
>>> help(DjangoCache)

Caveats

Types matter in key equality comparisons. Comparisons like 1 == 1.0 and b'abc' == u'abc' return False.

Tutorial

TODO

Reference and Indices

License

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.

Release files for diskcache 0.7.0

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Source distribution (sdist)

Source distribution for diskcache 0.7.0
File	Size	Uploaded
diskcache-0.7.0.tar.gz	126.9 kB	Feb 23, 2016	Details

Built distribution (wheel)

Table of built distributions (wheels) for diskcache 0.7.0
File	Interpreter	ABI	Platform	Reset
diskcache-0.7.0-py2.py3-none-any.whl 13.8 kB Feb 23, 2016	Python 3, Python 2	none	any	Details

Total release size: 140.7 kB

Release files / diskcache-0.7.0.tar.gz

Download URL	diskcache-0.7.0.tar.gz
Size	126.9 kB
Tags	Source
SHA-256 checksum How to use checksums	`1c64e23e10ced8ee864800f773f298b10d3c618714f2f29b14d48bf9b12f35d1`
BLAKE2b-256 checksum How to use checksums	`17ef6ae176da5f7827b0999b2f4c65f74a023d88ce2c014e5e764e01b230584b`
Upload date	Feb 23, 2016
Uploaded using Trusted Publishing? What is trusted publishing?	No

Release files / diskcache-0.7.0-py2.py3-none-any.whl

Download URL	diskcache-0.7.0-py2.py3-none-any.whl
Size	13.8 kB
Tags	Python 2 Python 3
SHA-256 checksum How to use checksums	`22605140f677fdaf5c3f75dea45219c810882ee56c640fb6547c1f07f849facc`
BLAKE2b-256 checksum How to use checksums	`491a653603c742254c280a6296766af8722d5a211bde83a810434a7b5c3f8584`
Upload date	Feb 23, 2016
Uploaded using Trusted Publishing? What is trusted publishing?	No