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  The 10 Greatest Hacks of My Life

My co-founder and I briefly considered applying to YCombinator for the Winter 2012 session. We eventually decided to bootstrap Curvio initially, and raise a seed round on our own after we launch (so far so good!). But looking over the YC application, one question intrigued me:Please tell us about the time you, tansey, most successfully hacked some (non-computer) system to your advantage.Now, there are a lot of ways to interpret this. A mechanical interpretation would be about...

   Hack,Most important,Example,Curvio     2011-10-22 12:47:42

  The Essence of Google Dart: Building Applications, Snapshots, Isolates

WÑ–th thousands of programming languages floating around, why is Google introducing Google Dart? What can it possibly add? The short answer: the Google Dart team wanted a language well suited to modern application development, both on the server and the (mobile) client. Some of Dart's features address problems that languages like Java or Javascript have long had. Dart's Snapshots resemble Smalltalk images, allowing (nearly) instant application startup and wi...

   Dart,Google,Client side,Web,Language,Snapshort,Isolate     2011-10-24 11:41:16

  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

  PHP: a fractal of bad design

Preface I’m cranky. I complain about a lot of things. There’s a lot in the world of technology I don’t like, and that’s really to be expected—programming is a hilariously young discipline, and none of us have the slightest clue what we’re doing. Combine with Sturgeon’s Law, and I have a lifetime’s worth of stuff to gripe about. This is not the same. PHP is not merely awkward to use, or ill-suited for what I want, or suboptimal, or...

   PHP,Design,Analysis     2012-04-11 13:46:57

  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

  Privileged users get removed from database in GoDaddy shared hosting

GaDaddy is a famous web hosting platform where many people put their websites on its platform. If one has low budget and wanna a shared hosting, you can buy the service at GoDaddy and share some hosting resource with others. In such cases, there would be resource limit based on different plans. In this post, we will discuss one scenario which caused our application down caused by database usage on shared hosting plan and hope it helps readers who encounter similar issues. The issue we encounter...

   CPANEL,DATABASE,GODADDY,PRIVILEGED USER     2021-05-25 23:06:50