lb2 is an asynchronous multithreaded load balancer written in C++. It is designed to be highly configurable and supports six different algorithms of load balancing. This project aims to provide a flexible and efficient solution for distributing network traffic across multiple servers.
round-robinweighted round-robinip-hashconsistent hashleast-connectionsleast-response-time
First of all make sure, that pip is installed. It will be used for installing CMake and Conan if needed.
To automatically install all dependencies and build application type:
./lbbuild.sh build ReleaseThis script builds app and copies configs folder to build/lb2/configs
To build and run unit tests type:
./lbbuild.sh test Release# Configure logging
logging:
# Optional value.
file:
name: logs/logs.txt # Logfile name
level: debug # Possible values: trace, debug, info, warning, error
console:
level: debug
thread_pool:
threads_number: auto # or number
acceptor:
port: 9090 # Port number
ip_version: 4 # or 6
# Configure load balancing algorithm
load_balancing:
# Possible values:
# - round_robin
# - weighted_round_robin
# - consistent_hash
# - ip_hash
# - least_connections,
# - least_response_time
# Example config of least connections
algorithm: least_connections
endpoints:
- ip: "127.0.0.1"
port: 8081
- ip: "127.0.0.2"
port: 8082
- ip: "127.0.0.3"
port: 8083
# Example config of least response time
# algorithm: least_response_time
# endpoints:
# - ip: "127.0.0.1"
# port: 8081
# - ip: "127.0.0.2"
# port: 8082
# - ip: "127.0.0.3"
# port: 8083
# Example config of round robin
# algorithm: round_robin
# endpoints:
# - ip: "127.0.0.1"
# port: 8081
# - ip: "127.0.0.2"
# port: 8082
# - ip: "127.0.0.3"
# port: 8083
# Example config of weighted round robin
# algorithm: weighted_round_robin
# endpoints:
# - ip: "127.0.0.1"
# port: 8081
# weight: 1
# - ip: "127.0.0.2"
# port: 8082
# weight: 2
# - ip: "127.0.0.3"
# port: 8083
# weight: 3
# Example config of consistent hash
# algorithm: consistent_hash
# replicas: 5
# endpoints:
# - ip: "127.0.0.1"
# port: 8081
# - ip: "127.0.0.2"
# port: 8082
# - ip: "127.0.0.3"
# port: 8083
# Example config of ip hash
# algorithm: ip_hash
# endpoints:
# - ip: "127.0.0.1"
# port: 8081
# - ip: "127.0.0.2"
# port: 8082
# - ip: "127.0.0.3"
# port: 8083-
Firstly, build app. To do it type:
./lbbuild.sh build Release -
Then, go to
build/lb2/ -
Modify configs in
build/lb2/configs/config.yamlor write your own. -
Run app using:
./lb_app
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