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MIT License | ||
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Copyright (c) 2017, Abhishek Sharma ( License Applicable to Program wisckey_test.cc ) | ||
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Permission is hereby granted, free of charge, to any person obtaining a copy | ||
of this software and associated documentation files (the "Software"), to deal | ||
in the Software without restriction, including without limitation the rights | ||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
copies of the Software, and to permit persons to whom the Software is | ||
furnished to do so, subject to the following conditions: | ||
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The above copyright notice and this permission notice shall be included in all | ||
copies or substantial portions of the Software. | ||
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
SOFTWARE. |
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# WiscKey | ||
Key Value Store based on LevelDB | ||
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Separating Key and Values in SSD- Conscious Storage is a paper published in 14th USENIX Conference on File and Storage Technologies in Feb 2016. I have implemented this on top LevelDB to understands the performance improvements. | ||
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The idea is to separate the key from values to minimize the I/O amplification. | ||
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## Contribution: | ||
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I have created a program called wisckey_test.cc which uses LevelDB architecture to save Key and Value Offset. The actual value is saved in a logfile inside wisckey_test_dir which get created at run time. | ||
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## Credit | ||
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WiscKey: Separating Keys from Values in SSD-conscious Storage | ||
Authors: Lanyue Lu, Thanumalayan Sankaranarayana Pillai, Andrea C. Arpaci-Dusseau, and Remzi H. Arpaci-Dusseau, University of Wisconsin—Madison | ||
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build_config.mk | ||
*.a | ||
*.o | ||
*.dylib* | ||
*.so | ||
*.so.* | ||
*_test | ||
db_bench | ||
leveldbutil |
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language: cpp | ||
compiler: | ||
- clang | ||
- gcc | ||
os: | ||
- linux | ||
- osx | ||
sudo: false | ||
before_install: | ||
- echo $LANG | ||
- echo $LC_ALL | ||
script: | ||
- make -j 4 check |
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# Names should be added to this file like so: | ||
# Name or Organization <email address> | ||
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Google Inc. | ||
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# Initial version authors: | ||
Jeffrey Dean <jeff@google.com> | ||
Sanjay Ghemawat <sanjay@google.com> | ||
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# Partial list of contributors: | ||
Kevin Regan <kevin.d.regan@gmail.com> | ||
Johan Bilien <jobi@litl.com> |
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# Contributing | ||
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We'd love to accept your code patches! However, before we can take them, we | ||
have to jump a couple of legal hurdles. | ||
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## Contributor License Agreements | ||
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Please fill out either the individual or corporate Contributor License | ||
Agreement as appropriate. | ||
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* If you are an individual writing original source code and you're sure you | ||
own the intellectual property, then sign an [individual CLA](https://developers.google.com/open-source/cla/individual). | ||
* If you work for a company that wants to allow you to contribute your work, | ||
then sign a [corporate CLA](https://developers.google.com/open-source/cla/corporate). | ||
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Follow either of the two links above to access the appropriate CLA and | ||
instructions for how to sign and return it. | ||
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## Submitting a Patch | ||
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1. Sign the contributors license agreement above. | ||
2. Decide which code you want to submit. A submission should be a set of changes | ||
that addresses one issue in the [issue tracker](https://github.com/google/leveldb/issues). | ||
Please don't mix more than one logical change per submission, because it makes | ||
the history hard to follow. If you want to make a change | ||
(e.g. add a sample or feature) that doesn't have a corresponding issue in the | ||
issue tracker, please create one. | ||
3. **Submitting**: When you are ready to submit, send us a Pull Request. Be | ||
sure to include the issue number you fixed and the name you used to sign | ||
the CLA. | ||
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## Writing Code ## | ||
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If your contribution contains code, please make sure that it follows | ||
[the style guide](http://google-styleguide.googlecode.com/svn/trunk/cppguide.xml). | ||
Otherwise we will have to ask you to make changes, and that's no fun for anyone. |
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Copyright (c) 2011 The LevelDB Authors. All rights reserved. | ||
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Redistribution and use in source and binary forms, with or without | ||
modification, are permitted provided that the following conditions are | ||
met: | ||
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* Redistributions of source code must retain the above copyright | ||
notice, this list of conditions and the following disclaimer. | ||
* Redistributions in binary form must reproduce the above | ||
copyright notice, this list of conditions and the following disclaimer | ||
in the documentation and/or other materials provided with the | ||
distribution. | ||
* Neither the name of Google Inc. nor the names of its | ||
contributors may be used to endorse or promote products derived from | ||
this software without specific prior written permission. | ||
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | ||
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | ||
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | ||
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | ||
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | ||
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | ||
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | ||
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | ||
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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