glossary

Question 1

API

Answer 1

Application Programming Interface
API is an interface for a system that interacts with other systems

You don’t have to know or can’t know how the other system works. You utilize the other system via API.

Question 2

Back-end

Answer 2

It refers to the server-side environment

Question 3

Cache

Answer 3

The cache is a software or hardware component that stores data temporarily for fast data retrieval

• push cache & pull cache
• caching policy to decide what to keep and what to delete due to the resource limitation

Maintaining data up-to-date is important ( not getting it stale)

Question 4

CDN

Answer 4

Content Delivery Network

The CDN is a group of servers allocated globally for geographically distant users.

The main purpose of having CDN is to deliver content efficiently and quickly to clients. Its best suitable for static assets including images and videos.

Question 5

Client

Answer 5

Clients are one part of the client-server model, where clients initiate a communication session with a server.

Question 6

CMS

Answer 6

Content Management System

It is software to manage content including creation, modification, storage.

Question 7

Internet Cookies

Answer 7

The cookies are a block of information stored on your web browser. It depends on your cookie setting, but it typically stores your web browsing information, your name, address, etc. So when you revisit a site, it will remember who you are.

Question 8

Front-end

Answer 8

It refers to client-side development.

Question 9

DNS

Answer 9

Domain Name System

DNS translates human-readable domain names to machine-readable IP addresses.

Question 10

Latency

Answer 10

Latency is a measure of time delay.

It measures how much time it takes for your computer to send a request to a server and receive a response back.

Question 11

Load balancing

Answer 11

Load balancing is a process to distribute incoming traffic (requests) evenly across backend servers. The purpose of load balancing is to optimize the server utilization and improve its efficiency

Question 12

Mobile web/native

Answer 12

The native often refers to the applications downloaded to a smartphone

Question 13

NoSQL

Answer 13

Not Only SQL

Data is stored in forms other than a tabular form such as document, key&value pair, graph, wide-column. It’s optimized for applications that require large data volume, low latency, and flexible data models.

Question 14

Refactor

Answer 14

Refactor refers to the restructuring of the existing computer code.

Question 15

Rest

Answer 15

Representational State Transfer

Rest is an architectural style for providing standards between computer systems on the web.

Question 16

Sharding

Answer 16

Sharding is the act of partitioning database into smaller data shards to optimize for database speed