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A walk through of different ways accessing Kubernetes application

When a web application is deployed on KUbernetes, to access the application, there must be some set up needs to be done so that external users can access the resource within the Kubernetes clusters. IN this post, we will walk through different ways to access application from outside. Before exploring different ways, let's set up a simple nginx eb application which will just serve the nginx welcome message when loading. # deployment.yaml apiVersion: apps/v1 kind: Deployment metadata: name: ngin...

KUBERNETES,PORT FORWARD,SERVICE,CLUSTERIP,NODEPORT,LOADBALANCER,INGRESS 2021-05-31 00:20:27

How to Ace a Google Interview

Imagine a man named Jim. He's applying for a job at Google. Jim knows that the odds are stacked against him. Google receives a million job applications a year. It's estimated that only about 1 in 130 applications results in a job. By comparison, about 1 in 14 high-school students applying to Harvard gets accepted. Jim's first interviewer is late and sweaty: He's biked to work. He starts with some polite questions about Jim's work history. Jim eagerly explains his short career. The intervi...

Google,Interview,Questions and answers,Job 2011-12-26 09:17:36

Fast tracking android app development with optimum delivery.

Most Android developers nowadays are faced with challenges of delivering optimum feature/product in due time. Most developers believe working hard will ensure their success in getting this actionable result, howbeit, working smart is the ground to get this done. working smart brings productivity while working too hard might resolve to frustration. In this article, we will be looking at some basic tips to working smart as an android developer in order to: Fasten up your nex...

2017-09-11 17:41:40

About .NET memory leak--GC,Delegate and weak reference

Memory leak is always a headache for many programmers, the situation is much better now in some languages which have GC mechanism, but still we may face some memory leak issues when we write programs. 1. What is memory leak? Memory leak is not that the memory chip is broken. In short, it's about that the memory requested is not released at the expected time as an expect way. So what is the expected time? This is very important for you to understand memory leak. If the time an object taking the m...

.NET,GC,Reference counting,Mark and sweep,Weak reference 2013-05-25 12:59:09

How to check when an API is introduced in GoLang

Normally people would not pay much attention to which GoLang version is being used as lots of functions are backward compatible. However there are cases where GoLang version does matter as some functions may not be supported by old version of GoLang. For example, strings.Builder is introduced in Go 1.10, but below code would fail to be compiled on Go 1.10. package main import ( "fmt" "strings" ) func main() { var b strings.Builder b.WriteString("polarisxu") fmt.Println(b.Cap()) } The ...

GOLANG,API VERSION,GO TOOL 2021-02-07 00:43:24

The Great Tech War Of 2012

From left: The late Apple cofounder Steve Jobs, Facebook CEO Mark Zuckerberg, Google CEO Larry Page, and Amazon CEO Jeff Bezos. | Photos courtesy of David Paul Morris/Getty Images (Jobs); Justin Sullivan/Getty Images (Zuckerberg); Chip East/Reuters (Page); Mario Tama/Getty Images (Bezos).Gilbert Wong, the mayor of Cupertino, California, calls his city council to order. "As you know, Cupertino is very famous for Apple Computer, and we're very honored to have Mr. Steve Jobs come here tonight ...

2012,Tech war,Facebook,Apple,Google,Amazon,Tablet,Cloud,Analysis 2011-10-17 11:06:25

First impression of Github Copilot

It has been some time since I heard about the new generation of AI powered coding assistant -- Github Copilot. Don't get chance to experience it until obtained the tech preview access recently. So this post will document some first impression while using it. For now, this tool is only supported in VSCode and it can support various different programming languages. To enable it, just need to search and install the Github Copilot extension within VSCode. Once that is enabled, you will find that whe...

GITHUB COPILOT,FIRST IMPRESSION 2021-08-13 22:45:31

Install and enable redis extension in PHP 5.X on Windows

Redis is frequently used as a caching layer for web applications to improve its performance. In PHP 5.x, if one wants to use Redis, the redis extension needs to be installed and enabled first. This post will show how to install and enable redis extension on Windows with PHP 5.X. Basically there are two dlls to be downloaded: php_redis.dll and php_igbinary.dll. Below are detailed steps Go to http://windows.php.net/downloads/pecl/releases/redis/2.2.7/ and find the respective php_redis zip ma...

PHP,WINDOWS,REDIS,PHP 5.6 2021-07-11 03:52:18

Why (offset, limit) is slow in database select?

Starting from a problem Five years ago when I was working at Tencent, I found that MySQL request speed was very slow in the pagination scenario. With only 100,000 data, a select query on a single machine took about 2-3 seconds. I asked my mentor why, and he asked in return, "In an indexing scenario, what is the time complexity to get the nth largest number in MySQL?" The pursuit of the answer Confirming the scenario Assuming there is an index on the "status" column, a query like "select * from t...

SLOW,LIMIT,OFFSET,MYSQL 2023-03-12 05:21:02