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node-hashtable

v0.1.1

Published

This is a simple hashtable, all written in node, to help you access and store your data over multiple workers or modules. It will provide the abstraction to access it through workers (cluster).

Downloads

5

Readme

node-hashtable

A simple hashtable written in node (not meant for production). It will help you share data over your node clusters or modules.

Installation

npm install node-hashtable

Example

With cluster:

var hashTable = require("node-hashtable");

var cluster = require("cluster");

var numCPUs = require('os').cpus().length;


if(cluster.isMaster) {
  hashTable.set("test", "Hello World");

  // Fork workers.
  for (var i = 0; i < numCPUs; i++) {
      cluster.fork();
  }
}
else if(cluster.isWorker) {
  hashTable.get("test", function(data) { //Callback is required!
    console.log(data); //output -> "Hello World"
  });
}

Without cluster:

var hashTable = require("node-hashtable");


hashTable.set("test", "Hello World");

var data = hashTable.get("test"); //In this case, callback is not required.

console.log(data); //output -> "Hello World"

Verbs

hashTable.set("key", data, [callback])

This function will set data to a key. If your using a cluster, you should create the callback function!

hashTable.set("key", data, function(){
  //Do stuff
});

hashTable.get("key", [callback])

This function will return data. In this case, if using with a cluster, you NEED to create the callback!

hashTable.get("key", function(data){
  //Do stuff
});

hashTable.add("key", data, [callback])

Diferent from .set, this will append data to the key. Be carefull when appending objects.

hashTable.add("key", "more stuff", function(){
  //Do stuff
});

hashTable.update("key", data, [callback])

This will find the property you want to update inside the key, and update it.

hashTable.update("key", {prop: 'new'}, function(){
  //Do stuff
});

hashTable.delete("key", [callback])

No explanations needed...

hashTable.delete("key", function(){
  //Do stuff
});

hashTable.createHash(data, [callback])

It will return a hash for your data.

hashTable.createHash(data, function(hash){

  hashTable.set(hash, data, function(){
    //Do stuff
  });

});

hashTable.createKey(data, [callback])

It will return a random hash key.

hashTable.createKey(data, function(key){

  hashTable.set(key, data, function(){
    //Memo your key!
  });

});

hashTable.clear([callback])

This function will clear the entire hash table.

hashTable.createKey(function(){
  //Do stuff
});

Thank you

  • Nodejistu/nssocket for providing the socket middleware