Recent Articles Changed
Javascript - Class (ES6)

Modified Saturday 02-03 11:45

This article is Class in Javascript. Class was introduced in ECMAScript 2015. Before the module pattern was used to create a class-like behavior. Classes provide a simpler way to create objects and deal with inheritance than JavaScript's existing...

Chrome Dev Tool Source Debugger Scope
Javascript - This

Modified Friday 01-03 07:25

this is a variable that has a reference value to the scope (namespace) this printThisobjthisobj Generally, this is the local scope but it may be changed. You can set this : in the call of a function (how the function was called) with bind automatically...

Javascript - Arrow Function Expression

Modified Friday 01-03 07:20

An arrow function expression has a shorter syntax than a function expression and does not bind its own: this, arguments, super, or new.target. These function expressions are best suited for non-method functions. As an arrow function does...

HTML - Attribute

Modified Thursday 29-02 05:16

HTML An attribute in HTML is an XML attribute of an HTML element Attribute names are TR/html-markup/documents.htmlcase-insensitive. Classes and IDs are attributes used in the selection of element. Class and ID names cannot begin with numerals;...

React - Caching

Modified Thursday 29-02 03:07

This article is caching functionalities in React. There are 2 caching functionalities: for computed values, you would use a memo for a prop function, you would use useCallback. If you pass a function in props to a child component, its reference...

React - Memo (Cache)

Modified Thursday 29-02 03:02

Memoization is a React caching function that caches a computed value. It save the results of computation, and reuse these results if it sees the same inputs later. React memo is the equivalent of shouldComponentUpdate for a class component. ...

Chrome Cookie Configuration
What is a Third-party (3P) Cookie and how it works?

Modified Tuesday 27-02 00:28

Third party Cookies are cookies created by other sites (ie that comes from another domain (ie a third party) than the hosted web page. These sites own some of the content, like ads or images, that you see and was included on the webpage you visit. Technically,...

Chrome Cookies
What is a Cookie? (HTTP Set-Cookie Header )

Modified Tuesday 27-02 00:25

A cookie is: a key-value data with some associated that control how the browser should manage them. set by a HTTP response via the set-cookie header The received cookies by the browser can be seen in their devtool With the Set-Cookie header,...


Recent Articles Created
React - Caching

Created Thursday 29-02 03:04

This article is caching functionalities in React. There are 2 caching functionalities: for computed values, you would use a memo for a prop function, you would use useCallback. If you pass a function in props to a child component, its reference...

What is a React Node?

Created Monday 26-02 04:51

A react node is a node in the React DOM tree. A node may have the following data type: a React Element a React Fragment a React Portal (floating element) and the base Javascript data type: string, number, boolean, null or undefined. You...

Card Puncher Data Processing
What is a broker in an event-driven architecture?

Created Monday 04-12 02:24

In a event-driven architecture, a message broker (or “broker”): receives messages (event) from publishers and delivers them to subscribers. RabbitMQ, RabbitMQ is a message broker system that allows for powerful yet simple queuing of tasks....

Thomas Bayes
What is Event Detection or Event mining?

Created Monday 04-12 00:23

Event Mining or Event detection can be defined as a process of finding: the frequent events, the rare events, unknown event (it occurrence can be deduced from observation of the system), the anomaly, the correlation between events, the consequences...

Card Puncher Data Processing
What is an Async Request (fire and forget)?

Created Monday 04-12 11:25

An Async Request is a event-driven request where: you don't need a response from the server because you're not requesting or asking for anything you just want to communicate or inform that “something happened.” This type of request is also...

Card Puncher Data Processing
What are Channels?

Created Monday 04-12 11:19

A channel has a name or identifier (e.g., user_signed_up) that supports a single type of message. Channel may also be referred as: topics, routing keys, event types, etc. All brokers support communication through multiple channels. Channel...

Card Puncher Data Processing
What is a protocol?

Created Monday 04-12 10:40

A protocol is a process that designs: the interactions that may occur between participants (known as agents) the states of this interactions (lifecycle) finite automata

Card Puncher Data Processing
What are the kinds of dependency relationships?

Created Friday 01-12 07:44

This article lists the relationship that you can find between dependency in dependency tree. direct: a dependency of your package dev: a dependency needed to develop and build the package transitive: a dependency of a dependency provided by...


Data all the way

Always keep one hand firmly on data, Amos liked to say.

Data is what set psychology apart from philosophy, and physics from metaphysics.

Amos Tversky (The undoing project)
Data Warehouse Subsystem

Data Warehouse Subsystems

Developing a data warehouse means assembling a lot of subsystems in order to create a whole and coherent data application.

Discovers the 34 Kimball Subsystems and drill down to discover them

Data Warehouse Subsystems

Card Puncher Data Processing

Data Processing

Data processing has changed a lot since 1940 :) and luckily, we are not using punch card anymore.

Stream processing is becoming the norm in data integration task while batch processing stays the king in data analysis.

Data Processing

ENIAC, 1946

The first fully electronic digital computer

Eniac 1946

Table Recursion Rectangle

Data Modeling

Data Modeling is the translation of process into the world of data. The process is tricky but not insurmountable.

Data Modeling

Snowflake
Dimensional Data Modeling

Dimensional Data Modeling permits you to model a (hyper)cube and analyse a process through different perspective. You define dimensions, measures and metrics.

Dimensional Data Modeling

Most programs process some input to produce some output; that’s pretty much the definition of computing.

Function Home

Function

A Function is the basic block of all reusable code component. It is also becoming the central component of any serverless architecture.

Function

Knowledge isn't free. You have to pay attention.

Computing Division at the Department of the Treasury, mid 1920s

Computing Division At The Dept Of The Treasur 1920

Remington Rand Univac

Medieval Counting Table

Table / Relation

The table format (known also as a relation) is the most important data structure used in data analysis. Did you know that its name originate from the medieval counting table ?

Table

Education isn't something you can finish.

Richard Feynman
Task Runner