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StackOverflow Local Peter Burkimsher email@example.com 2014-02-10 This collection of scripts allows the StackOverflow data dump to be rapidly accessed while offline. -- About -- The data dump is compressed to only 2.09 GB, plus 230.5 MB for titles. Search time is about 8 seconds. Post reading time is about 6 seconds. -- Installing -- I recommend not running ./install.sh as normal! It will be very slow. Instead, open three Terminal windows and run the commands inside install.sh in parallel. -- Requirements -- You'll need cc to compile isQaId for setup. At runtime, you'll need a web server, PHP, Python, and bzip2recover. -- Developers -- You can run the scripts without the web server. 1. ./searchTitles.sh "your search here" (returns the IDs and titles, separated by a > character) 2. ./readPost.sh 1234567 (returns the post, in compressed form) The compressed format of the database is delimited by < and > characters as follows: <<Post ID<>Answer Id><Body>> For reference, the original StackOverflow database is 4.6 GB. It's compressed by only keeping the accepted answer for each question, and cutting out a lot of the XML. Searching for all answers to a question takes 30 minutes of search time per question, which is too slow. Using dd instead of readBlock.py is possible, but post reading time increases to 30 seconds.