PebbleDB

.gitpod.yml

@@ -0,0 +1,7 @@
+# This configuration file was automatically generated by Gitpod.
+# Please adjust to your needs (see https://www.gitpod.io/docs/config-gitpod-file)
+# and commit this file to your remote git repository to share the goodness with others.
+
+image: tendermintdev/docker-tm-db-testing
+
+# this means that there's a one-click known good environment available to developers.

.golangci.yml

@@ -40,6 +40,12 @@ linters:
     # - gocognit
     - nolintlint
 
+run:
+  build-tags:
+    - cleveldb
+    - rocksdb
+    - boltdb
+
 issues:
   exclude-rules:
     - path: _test\.go

.vscode/settings.json

@@ -0,0 +1,7 @@
+{
+    "makefile.extensionOutputFolder": "./.vscode",
+    "go.buildTags": "pebbledb goleveldb cleveldb rocksdb",
+    "go.lintTool": "golangci-lint",
+    "go.lintOnSave": "workspace",
+    "go.inferGopath": false
+}

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Changelog
 
+## Unreleased
+
+- remove mutex from prefixdb
+
 ## 0.6.7
 
 **2022-2-21**

README.md

@@ -1,4 +1,4 @@
-# Tendermint DB 
+# Tendermint DB
 
 [![version](https://img.shields.io/github/tag/tendermint/tm-db.svg)](https://github.com/tendermint/tm-db/releases/latest)
 [![license](https://img.shields.io/github/license/tendermint/tm-db.svg)](https://github.com/tendermint/tm-db/blob/master/LICENSE)
@@ -22,12 +22,8 @@ Go 1.13+
 
 - **[LevelDB](https://github.com/google/leveldb) [experimental]:** A [Go wrapper](https://github.com/jmhodges/levigo) around [LevelDB](https://github.com/google/leveldb). Uses LSM-trees for on-disk storage, which have good performance for write-heavy workloads, particularly on spinning disks, but requires periodic compaction to maintain decent read performance and reclaim disk space. Does not support transactions.
 
-- **[BoltDB](https://github.com/etcd-io/bbolt) [experimental]:** A [fork](https://github.com/etcd-io/bbolt) of [BoltDB](https://github.com/boltdb/bolt). Uses B+trees for on-disk storage, which have good performance for read-heavy workloads and range scans. Supports serializable ACID transactions.
-
 - **[RocksDB](https://github.com/cosmos/gorocksdb) [experimental]:** A [Go wrapper](https://github.com/cosmos/gorocksdb) around [RocksDB](https://rocksdb.org). Similarly to LevelDB (above) it uses LSM-trees for on-disk storage, but is optimized for fast storage media such as SSDs and memory. Supports atomic transactions, but not full ACID transactions.
 
-- **[BadgerDB](https://github.com/dgraph-io/badger) [experimental]:** A key-value database written as a pure-Go alternative to e.g. LevelDB and RocksDB, with LSM-tree storage. Makes use of multiple goroutines for performance, and includes advanced features such as serializable ACID transactions, write batches, compression, and more.
-
 ## Meta-databases
 
 - **PrefixDB [stable]:** A database which wraps another database and uses a static prefix for all keys. This allows multiple logical databases to be stored in a common underlying databases by using different namespaces. Used by the Cosmos SDK to give different modules their own namespaced database in a single application database.

backend_test.go

@@ -315,7 +315,6 @@ func testDBIterator(t *testing.T, backend BackendType) {
 	ritr, err = db2.ReverseIterator(nil, nil)
 	require.NoError(t, err)
 	verifyIterator(t, ritr, nil, "reverse iterator with empty db")
-
 }
 
 func verifyIterator(t *testing.T, itr Iterator, expected []int64, msg string) {