BadgerDB v1.5.5

Adding support for Go modules

This will probably be the last v1.x version released, as we're also releasing v2.0.0 very soon.

BadgerDB v1.5.3

Bug Fixes:

• Fix a panic caused due to item.vptr not copying over vs.Value, when looking
  for a move key.

BadgerDB v1.5.2

Bug Fixes:

• Fix the way move key gets generated.
• If a transaction has unclosed, or multiple iterators running simultaneously,
  throw a panic. Every iterator must be properly closed. At any point in time,
  only one iterator per transaction can be running. This is to avoid bugs using the
  transaction data structure which is thread unsafe.

Warning: This change might cause panics in user code. Fix is to properly
close your iterators, and only have one running at a time per transaction.

BadgerDB v1.5.1

Bug Fixes:

• Fix for infinite yieldItemValue recursion. #503
• Fix recursive addition of badgerMove prefix. 2e3a32f
• Use file size based window size for sampling, instead of fixing it to 10MB. #501

Cleanup:

• Clarify comments and documentation.
• Move badger tool one directory level up.

Badger v1.5.0 Release

• Introduce NumVersionsToKeep option. This option is used to discard many
  versions of the same key, which saves space.
• Add a new SetWithDiscard method, which would indicate that all the older
  versions of the key are now invalid. Those versions would be discarded during
  compactions.
• Value log GC moves are now bound to another keyspace to ensure latest versions
  of data are always at the top in LSM tree.
• Introduce ValueLogMaxEntries to restrict the number of key-value pairs per
  value log file. This helps bound the time it takes to garbage collect one
  file.

BadgerDB v1.4.0

• Make mmap-ing of value log optional.
• Run GC multiple times, based on recorded discard statistics.
• Add MergeOperator.
• Force compact L0 on close (#439).
• Add truncate option to warn about data loss (#452).
• Discard key versions during compaction (#464).
• Introduce new LSMOnlyOptions, to make Badger act like a typical LSM based DB.

Bug fix:

• [Temporary] Check max version across all tables in Get (would be removed in v2.0).
• Update commit and read ts while loading from backup.
• Ensure all transaction entries are part of the same value log file.
• On commit, run unlock callbacks before doing writes (#413).
• Wait for goroutines to finish before closing iterators (#421).

BadgerDB v1.3.0

• Add DB.GetSequence() method to generate monotonically increasing integer
  sequences.
• Add DB.Size() method to return the size of LSM and value log files.
• Tweaked mmap code to make Windows 32-bit builds work.
• Tweaked build tags on some files to make iOS builds work.
• Fix DB.PurgeOlderVersions() to not violate some constraints.

BadgerDB v1.2.0

Version bump to v1.2.0

Badger v1.1.1

• Fix bug where txn.Get was returing key deleted in same transaction.
• Fix race condition while decrementing reference in oracle.
• Update doneCommit in the callback for CommitAsync.
• Iterator sees writes of current transaction.

Badger v1.1.0

• Create Badger directory if it does not exist when badger.Open is called.
• Added Item.ValueCopy() to avoid deadlocks in long-running iterations
• Fixed 64-bit alignment issues to make Badger run on Arm v7