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  A brief guide to tech internships

Planning to be an Intern in the Bay Area during Summer 2012? Make sure to read an Intern's Guide to the Bay Area, and join the 2012 Facebook group.  (via this guy, via this guy) Joel Spolsky, from the Joel On Software blog and StackOverflow, wrote an article with Advice for Computer Science College Students back in '05. According to Joel,  No matter what you do, get a good summer internship. As such: here’s everything you ever wanted to know about tech inter...

   Internship,Advice,CS student     2012-02-01 04:48:31

  True Scala complexity

Update 2: Sorry for the downtime. Leave it to the distributed systems guy to make his blog unavailable. Nginx saves the day.It’s always frustrating reading rants about Scala because they never articulate the actual complexities in the core language.Understandable—this post is intended fill that gap, and it wasn’t exactly easy to put together. But there’s been so much resistance to the very thought that the complexity exists at all, even from on up high, that I thou...

   Scala,Complexity     2012-01-10 07:17:07

  4 deployment modes of Redis

As a high-performance in-memory database, Redis is widely used in current mainstream distributed architecture systems. To improve system fault tolerance, using multiple instances of Redis is also inevitable, but the complexity is much higher than that of a single instance. This article mainly introduces the four deployment modes of Redis and their advantages and disadvantages. Standalone Standalone mode is to install a Redis, start it, and business connects to it and that's all. The specific ...

   REDIS,STANDALONE,MASTER-SLAVE,SENTINEL,CLUSTER     2023-03-03 21:35:09

  Example on integrating TypeScript with Webpack

TypeScript is now a very popular language to create typed JavaScript code to reduce development error. It provides a type system on top of JavaScript which has only a weak type system. Once the TypeScript code is developed, it can be compiled into corresponding JavaScript so that they can be loaded and parsed by browser. Webpack is another tool for bundling multiple JS files into a single one so that no multiple connections to be established between browser and server. when a page is loaded This...

   TYPESCRIPT,WEBPACK,JAVASCRIPT,EXAMPLE     2021-03-13 21:31:29

  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

  The four key figures behind the success of JavaScript - Douglas Crockford

JavaScript's success can be attributed to at least four key figures: Brendan Eich, the creator of JavaScript Douglas Crockford, the creator of JSLint and JSON John Resig, the creator of jQuery Ryan Dahl, the creator of Node.js. We are already very familiar with Brendan Eich and the invention process of JavaScript, so let's start with Douglas Crockford, the second in command of JavaScript. Alliance In the 1990s, Microsoft's dominance overshadowed the whole world. At this time, two challengers e...

   JAVASCRIPT,DOUGLAS CROCKFORD,HISTORY     2023-05-07 06:42:30

  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

  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

  Encrypting and decrypting PGP file or text on MacOS

When doing data exchange among different parties, there is a frequent need of encrypting data or file and sending it to partner and asking partner to use corresponding key to decrypt the data or file. A famous way of exchanging data is using asymmetric keys where no secret key needs to be shared. One party can just use the public key shared by partner to encrypt the data and the other party uses the private key to decrypt the data. Today, we will introduce how to use PGP to encrypt and decrypt d...

   PGP,GPG,ENCRYPTION,DECRYPTION,TUTORIAL     2020-10-29 05:06:09

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