diff options
Diffstat (limited to 'README.md')
| -rw-r--r-- | README.md | 9 |
1 files changed, 7 insertions, 2 deletions
@@ -258,6 +258,10 @@ set to a key which is different than the key not existing. Use the `Bucket.Delete()` function to delete a key from the bucket. +Please note that values returned from `Get()` are only valid while the +transaction is open. If you need to use a value outside of the transaction +then you must use `copy()` to copy it to another byte slice. + ### Iterating over keys @@ -370,7 +374,7 @@ func (*Bucket) DeleteBucket(key []byte) error ### Database backups -Bolt is a single file so it's easy to backup. You can use the `Tx.Copy()` +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 @@ -385,7 +389,8 @@ func BackupHandleFunc(w http.ResponseWriter, req *http.Request) { w.Header().Set("Content-Type", "application/octet-stream") w.Header().Set("Content-Disposition", `attachment; filename="my.db"`) w.Header().Set("Content-Length", strconv.Itoa(int(tx.Size()))) - return tx.Copy(w) + _, err := tx.WriteTo(w) + return err }) if err != nil { http.Error(w, err.Error(), http.StatusInternalServerError) |