fcgi Function is a C/CPP language based interface, which build on top of FastCGI with built in functional handler support, it also provided useful collection tools to enhance the facilities. It can be integrated with Nginx Fastcgi module

Nginx -- https://www.nginx.com/

fcgi library -- https://github.com/FastCGI-Archives/FastCGI.com

cmake and make

git clone --recursive https://github.com/Taymindis/fcgi-function.git

gcc profile_service.c ffunc.c ffunc.h -lfcgi -pthread -ldl -rdynamic

g++ profile_service.cpp ffunc.c ffunc.h -lfcgi -pthread -ldl -rdynamic

g++ -std=c++11 -I/home/xxx/cpplib/spdlog-0.17.0/include -DSPDLOG_FMT_PRINTF service_with_spdlog.cpp ffunc.c ffunc.h -lfcgi -pthread -ldl -rdynamic

./simple_service

it will result:-

Service starting
sock_port=2005, backlog=16
total function = 3
64 threads in process
Socket on hook 2005

Running on background by setting ffunc_conf->daemon = 1 , see example for mode details

int ffunc_main(int argc, char *argv[], ffunc_config_t *ffunc_conf) {
  ffunc_conf->sock_port = 2005;
  ffunc_conf->backlog = 160;
  ffunc_conf->max_thread = 64;
  ffunc_conf->daemon = 1; // run as daemon
  ffunc_parse_function(ffunc_conf, "getProfile", "postError", "postProfile");
  return 0;
}

valgrind --leak-check=full --show-leak-kinds=all --trace-children=yes ./simple_service

location /getProfile {
  add_header Allow "GET, POST, HEAD" always;
  if ( $request_method !~ ^(GET|HEAD)$ ) {
    return 405;
  }
  include /etc/nginx/fastcgi_params;
  fastcgi_param FN_HANDLER getProfile;
  fastcgi_pass 127.0.0.1:2005;
}

location /postProfile {
  add_header Allow "GET, POST, HEAD" always;
  if ( $request_method !~ ^(POST)$ ) {
    return 405;
  }
   include /etc/nginx/fastcgi_params;
  fastcgi_param FN_HANDLER postProfile;
  fastcgi_pass 127.0.0.1:2005;
}

<Location "/getProfile">
    # Timeout values are in seconds
    ProxyPass "fcgi://127.0.0.1:2005" connectiontimeout=300 timeout=300
    ProxyPassReverse "fcgi://127.0.0.1:2005"
    SetEnv  FN_HANDLER "getProfile"
</Location>

You will see the FN_HANDLER is function name mapping with the function inside simple_service code, the fastcgi port 2005 is the service you start with(please look at step 10 for more details.

ab -c 100 -n 10000 http://127.0.0.1:80/getProfile

ab -p "payload.txt" -T application/json -c 100 -n 10000 http://127.0.0.1:80/postProfile

the payload.txt is inside the root directory

cd DockerExample
docker build -t nginx_ffunc -f Dockerfile_ngx_ffunc .
docker run -d -v ~/fcgi-function/DockerExample:/tmp -p 80:80 --name testffunc nginx_ffunc
curl "http://127.0.0.1/getProfile"

Due to built in logging mechanism will slow down the process speed, suggested to use third party logging mechanism for your application layer such as:-

C++ spdlog

C++ g3log

C mini-async-log