kevinvoduy

Latency Comparison Numbers
--------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

kevinvoduy

Latency Comparison Numbers
--------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

kevinvoduy

Notes to review

• RESTful API
• React 16.0
• SQL Injection
• Object-oriented Design
• Data Warehouse

RESTful API

REST is an architectural style that defines a set of constraints and properties to allow communication between various systems on the web.

kevinvoduy

Node Notes

Study up mother fucker

1. What is Node? Where can you use it?

Node is a server side scripting language based on Google's V8 JavaScript engine. It is used to build scalable programs that are computationally simple but frequently accessed.

You can use node in I/O intensive web applications like video streaming site, real-time web applications, network applications, general-purpose applications, and distributed systems.