-----------------log data->    | main channel(crossbeam)  |   ->                        -----------------                                         ----------------                                    ----------------------                                  ->    |thread channel)|  -> background thread  |    appender1  |                                        ----------------                                    ----------------------                                        ----------------                                    ----------------------                                  ->    |thread channel)|  -> background thread  |    appender2  |                                        ----------------                                    ----------------------                                        ----------------                                    ----------------------                                  ->    |thread channel)|  -> background thread  |    appender3  |                                        ----------------                                    ----------------------                                        ----------------                                    ----------------------                                  ->    |thread channel)|  -> background thread  |    appender4  |                                        ----------------                                    ----------------------

//MACOS(Apple M1MAX-32GB)test bench_log ... bench:          85 ns/iter (+/- 1,800)

//MACOS(Apple M1MAX-32GB)test bench_log ... bench:          323 ns/iter (+/- 0)

log ="0.4"fast_log = {version ="1.7" }

log ="0.4"# "lz4","zip","gzip"fast_log = {version ="1.7",features = ["lz4","zip","gzip"] }

Performance optimization(important)

use log::{error, info, warn};fnmain(){    fast_log::init(Config::new().file("target/test.log").chan_len(Some(100000))).unwrap();    log::info!("Commencing yak shaving{}",0);}

Use Log(Console)

use log::{error, info, warn};fnmain(){    fast_log::init(Config::new().console().chan_len(Some(100000))).unwrap();    log::info!("Commencing yak shaving{}",0);}

Use Log(Console Print)

use log::{error, info, warn};fnmain(){    fast_log::init(Config::new().console().chan_len(Some(100000))).unwrap();    fast_log::print("Commencing print\n".into());}

Use Log(File)

use fast_log::{init_log};use log::{error, info, warn};fnmain(){    fast_log::init(Config::new().file("target/test.log").chan_len(Some(100000))).unwrap();    log::info!("Commencing yak shaving{}",0);info!("Commencing yak shaving");}

Split Log(ByLogDate)

use fast_log::config::Config;use fast_log::plugin::file_split::{RollingType,KeepType,DateType,Rolling};use std::thread::sleep;use std::time::Duration;use fast_log::plugin::packer::LogPacker;fnmain(){    fast_log::init(Config::new().chan_len(Some(100000)).console().file_split("target/logs/",Rolling::new(RollingType::ByDate(DateType::Day)),KeepType::KeepNum(2),LogPacker{},)).unwrap();for _in0..60{sleep(Duration::from_secs(1));        log::info!("Commencing yak shaving");}    log::logger().flush();println!("you can see log files in path: {}","target/logs/")}

Split Log(ByLogSize)

use fast_log::config::Config;use fast_log::consts::LogSize;use fast_log::plugin::file_split::{RollingType,KeepType,Rolling};use fast_log::plugin::packer::LogPacker;fnmain(){    fast_log::init(Config::new().chan_len(Some(100000)).console().file_split("target/logs/",Rolling::new(RollingType::BySize(LogSize::KB(500))),KeepType::KeepNum(2),LogPacker{},)).unwrap();for _in0..40000{        log::info!("Commencing yak shaving");}    log::logger().flush();println!("you can see log files in path: {}","target/logs/")}

Custom Log(impl do_log method)

use fast_log::appender::{FastLogRecord,LogAppender};use fast_log::config::Config;use fastdate::DateTime;use log::Level;structCustomLog{}implLogAppenderforCustomLog{fndo_logs(&mutself,records:&[FastLogRecord]){for recordin records{let now =DateTime::from(record.now);let data;match record.level{Level::Warn |Level::Error =>{                    data =format!("{} {} {} - {}  {}\n",                        now, record.level, record.module_path, record.args, record.formated);}                _ =>{                    data =format!("{} {} {} - {}\n",&now, record.level, record.module_path, record.args);}}print!("{}", data);}}}fnmain(){    fast_log::init(Config::new().custom(CustomLog{})).unwrap();    log::info!("Commencing yak shaving");    log::error!("Commencing error");    log::logger().flush();}