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Diffstat (limited to 'README.md')
| -rw-r--r-- | README.md | 7 |
1 files changed, 5 insertions, 2 deletions
@@ -426,8 +426,11 @@ func (*Bucket) DeleteBucket(key []byte) error Bolt is a single file so it's easy to backup. You can use the `Tx.WriteTo()` function to write a consistent view of the database to a writer. If you call this from a read-only transaction, it will perform a hot backup and not block -your other database reads and writes. It will also use `O_DIRECT` when available -to prevent page cache trashing. +your other database reads and writes. + +By default, it will use a regular file handle which will utilize the operating +system's page cache. See the [`Tx`](https://godoc.org/github.com/boltdb/bolt#Tx) +documentation for information about optimizing for larger-than-RAM datasets. One common use case is to backup over HTTP so you can use tools like `cURL` to do database backups: |