Bo's Engineering Notes

Posted on December 28, 2020

Telegram-iOS released v7.3 last week with the new group voice chats and other improvements. My previous post about building and running in Simulator is not working for several reasons: [Read More]

Posted on November 25, 2020

I happened to try an app called Galaxy App Booster that is a part of Galaxy Labs released by Samsung. It claims that it can optimize all apps on device and boost the overall performance by 5% to 15%. It’s attractive and many users are using it on non-Samsung phones... [Read More]

Posted on November 20, 2020

Telegram started the program of “Reproducible Builds for iOS and Android” to release its client source code in a more regular schedule. Although it’s a great move, you may find it’s still confusing how to build and run the iOS project with minimal effects. The official guide is present to... [Read More]

Posted on November 15, 2020

Most programming languages provide sorting APIs in their built-in libraries. Java and Go use different sorting algorithms, I implemented Java’s algorithms in Go with different approaches as an exercise. It’s a fun way to understand some design choices in both languages. [Read More]

Posted on July 12, 2020

Telegram builds a set of features to make users consume content inside the app. This article explains why Telegram needs these features and how they are implemented efficiently. [Read More]

Posted on June 22, 2020

Bubbles is a type of UI that‘s almost an integral part of our daily life. It’s a trivial job if a message is either a piece of plain text or one image file. The problem in Telegram is difficult as there are many message elements, such as texts, styled texts,... [Read More]

Posted on June 14, 2020

Telegram-iOS builds most UIs upon AsyncDisplayKit. It’s folked as a submodule of the project, in which many features have been removed and some of them are re-implemented in Swift. This post talks about the component structure and the UI programming pattern in the project. [Read More]

Posted on June 5, 2020

TCP is the only active MTProto transport on Telegram-iOS as I explained in the previous post. Let’s continue with the implementation details of connection management for MTProto. [Read More]

Posted on May 15, 2020

Let me use one more post to finish the introduction of the foundation modules of the project. [Read More]

Posted on May 11, 2020

Telegram-iOS uses reactive programming in most modules. There are three frameworks to achieve reactive functions inside the project: [Read More]

Posted on May 7, 2020

Telegram is one of the most popular instant messengers in the market. As of April this year, its MAU has passed 400 million. It’s a great achievement considering its service is not available in some countries. [Read More]

Posted on March 31, 2014

Posted on January 17, 2013

Posted on January 14, 2013

Posted on January 2, 2013

Posted on December 12, 2012

Posted on September 21, 2012

Posted on July 27, 2012

Posted on July 10, 2012

Posted on July 9, 2012