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Merge pull request #336 from boltdb/reclamation-docs 

README
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Ben Johnson 2015-03-27 16:14:54 -06:00
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@ -550,6 +550,17 @@ Here are a few things to note when evaluating and using Bolt:
However, this is expected and the OS will release memory as needed. Bolt can However, this is expected and the OS will release memory as needed. Bolt can
handle databases much larger than the available physical RAM. handle databases much larger than the available physical RAM.
* Because of the way pages are laid out on disk, Bolt cannot truncate data files
and return free pages back to the disk. Instead, Bolt maintains a free list
of unused pages within its data file. These free pages can be reused by later
transactions. This works well for many use cases as databases generally tend
to grow. However, it's important to note that deleting large chunks of data
will not allow you to reclaim that space on disk.
For more information on page allocation, [see this comment][page-allocation].
[page-allocation]: https://github.com/boltdb/bolt/issues/308#issuecomment-74811638
## Other Projects Using Bolt ## Other Projects Using Bolt