GLOBAL data per HTTP/Session request?

Question

QUESTION:

Is there any way to create a variable storage in per session/http request? The variable must be globally accessible and different

Answer 1

Per request, I think what you're after could be done with ordinary closures. For example, you'd define your custom functions in module that takes a req argument:

util_funcs.js:

module.exports = function( req ){
  return {
    customFunctionThatRequiresReq: function(){ console.info( req ) },
    otherFunctionThatRequiresReq:  function(){ console.log( req ) }
  };
};

Then wherever you depend on those functions (presumably some middleware elsewhere in the application), you can just require them in context:

var someMiddleWare = function( req, res, next ){

  var utils = require( 'util_funcs.js' )( req );

  utils.customFunctionThatRequiresReq();
  utils.otherFunctionThatRequiresReq();

}; 

This allows you to avoid littering your function args with req, and no dubious globals.