Update DEVELOPMENT.md

DEVELOPMENT.md

@@ -1,6 +1,8 @@
 # Building from Source
 
-You can use this command to clone the repository:
+You can build the Raftify source code on macOS, Windows, and Linux.
+
+Use this command to clone the repository,
 
 ```
 ❯ git clone --recursive https://github.com/lablup/raftify.git
@@ -12,14 +14,41 @@ If you already cloned it and forgot to initialize the submodules, execute the fo
 ❯ git submodule update --init
 ```
 
-# Development environment setup
+# Development Environment Setup
+
+## Test
+
+You can run the test codes of Raftify in parallel using [nextest](https://github.com/nextest-rs/nextest).
+
+To install `nextest`,
 
-## precommit hook setup
+```
+❯ cargo install cargo-nextest
+```
+
+And run the tests by the following command.
+
+```
+❯ cargo nextest run
+```
+
+## `precommit` hook setup
 
 You can use pre-commit hooks with the following configuration.
-This commit hook performs checks like cargo fmt and cargo clippy before committing.
+This commit hook performs checks like `cargo fmt` and `cargo clippy` before committing.
 
 ```
 ❯ pip install pre-commit --break-system-packages
 ❯ pre-commit install
 ```
+
+# Features
+
+You can build Raftify with the following features.
+
+By enabling or disabling the features below, you can include only the essential dependencies and source code in the build.
+
+- `inmemory_storage`: In-memory log storage.
+- `heed_storage`: [Heed](`https://github.com/meilisearch/heed`) log storage.
+- `rocksdb_storage`: [RocksDB](https://github.com/rust-rocksdb/rust-rocksdb) log storage.
+- `tls`: Enable TLS encryption for Raft server and client.