[book note] Manning MEAP: Streaming Data – Message Queueing Tier

This chapter covers Why we need a message queuing tier Understanding message durability How to accommodate offline consumers What are message delivery semantics Choosing the right technology 3.1 Why we need a message queuing tier With a streaming system we want the same, to decouple the components in each tier, but more importantly to decouple … Continue reading [book note] Manning MEAP: Streaming Data – Message Queueing Tier

[book note] Manning MEAP: JavaScript Next – Unit 1: Variables & Strings

Unit 1: Variables and & Strings Lesson 1. Declaring Variables with 1let In the history of JavaScript, variables have always been declared using the keyword var. ES6 introduces two new ways to declare variables, with the let and const keywords. Both of these work slightly different than variables with var. There are two primary differences … Continue reading [book note] Manning MEAP: JavaScript Next – Unit 1: Variables & Strings

[book note] Manning MEAP: JavaScript Next – Unit 2: Objects & Arrays

Unit 2 Objects & Arrays Lesson 5: New Array Methods Arrays are probably the most common data structure used in JavaScript. We use them to hold all kinds of data but sometimes getting the data we want into or out of the array isn’t as easy as it should be. However those tasks just got … Continue reading [book note] Manning MEAP: JavaScript Next – Unit 2: Objects & Arrays