dragonboat-cpp-example

About

This repo shows the basic usages of dragonboat in C++ projects and is not suitable for benchmark

This repo contains C++ examples for dragonboat.

The original repo of dragonboat examples can be found here

Details can be found in each folder.

1. helloworld
2. multigroup
3. *concurrent statemachine
4. ondisk
5. *ioservice

v3.0 binding released

Please rebuild the binding using the master branch of dragonboat

1. support all new features in nodehost.go with both sync/async version
2. support concurrent & on-disk statemachines with batchedUpdate method
3. prepareSnapshot & saveSnapshot take/return a void* to represent an arbitrary type
4. clients can specify both .so file name and factory name when starting cluster from a plugin
5. StartCluster now accepts a functional factory which allows caller to parse both C-style functions and lambda expressions

more

• we also have a plan to implement a Python binding
• issues are welcome both here and dragonboat

Prerequisite

• GCC with C++11 support
• cmake
• dragonboat C++ binding

Instructions can be found here.

The dragonboat C++ binding is based on CGo, thus its performance is worse than the original Go interface. Please refer to Adventures in Cgo Performance for more details.

Build

mkdir build
cd build && cmake ..
make

• example - ondisk is a RocksDB based key-value store thus RocksDB is required.

Run

Start three instances on the same machine in three different terminals:

./dragonboat_cpp_example -nodeid 1

./dragonboat_cpp_example -nodeid 2

./dragonboat_cpp_example -nodeid 3