#分布式
从2025年开年后开始写一本分布式教程，到现在过去了20天（中间还花了小一周时间准备面试，最后还不合适），初步写好了两章，大家可以看看。由于只是初稿，错漏在所难免，就是给大家看看目前的完成度。两章内容里，自己手画了20多张图，按照我预估全部完成可能有8章的内容，所以最后可能要画200+张的图。我挺喜欢画图解释原理的，一图胜千言。
BY codedump的电报频道
Secret Chats are one of the service’s additional security features; it allows messages to be sent with client-to-client encryption. This setup means that, unlike regular messages, these secret messages can only be accessed from the device’s that initiated and accepted the chat. Additionally, Telegram notes that secret chats leave no trace on the company’s services and offer a self-destruct timer.
elegram is updating its messaging app with options for auto-deleting messages, expiring invite links, and new unlimited groups, the company shared in a blog post. Much like Signal, Telegram received a burst of new users in the confusion over WhatsApp’s privacy policy and now the company is adopting features that were already part of its competitors’ apps, features which offer more security and privacy. Auto-deleting messages were already possible in Telegram’s encrypted Secret Chats, but this new update for iOS and Android adds the option to make messages disappear in any kind of chat. Auto-delete can be enabled inside of chats, and set to delete either 24 hours or seven days after messages are sent. Auto-delete won’t remove every message though; if a message was sent before the feature was turned on, it’ll stick around. Telegram’s competitors have had similar features: WhatsApp introduced a feature in 2020 and Signal has had disappearing messages since at least 2016.
telegram from in