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channel

Posted by 夏泽民 Feb 29, 2020

channel 是 Golang 中一个非常重要的特性，也是 Golang CSP 并发模型的一个重要体现。简单来说就是，goroutine 之间可以通过 channel 进行通信。

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zen of go

Posted by 夏泽民 Feb 27, 2020

https://dave.cheney.net/2020/02/23/the-zen-of-go How should I write good code? Something that I’ve been thinking about a lot recently, when reflecting on the body of my own work, is a common subtitle, how should I write good code? Given nobody actively seeks to write bad code, this leads to the question; how do you know when you’ve written good Go code?

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go1.14基于netpoll优化timer定时器实现原理

Posted by 夏泽民 Feb 27, 2020

http://xiaorui.cc/2020/02/11/go1-14%e5%9f%ba%e4%ba%8enetpoll%e4%bc%98%e5%8c%96timer%e5%ae%9a%e6%97%b6%e5%99%a8%e5%ae%9e%e7%8e%b0%e5%8e%9f%e7%90%86/ golang1.14版的rc已经发布有些日子了，在官方go1.14的介绍里有说优化了timer定时器。golang的定时器已经经历了几版的优化，但在依赖定时器的高性能场景，还是成为一个大的性能杀手。 go1.13和go1.14的区别？

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go1.14 基于信号的抢占式调度实现原理

Posted by 夏泽民 Feb 27, 2020

https://gocn.vip/topics/9884 go 1.14 中比较大的更新有信号的抢占调度、defer 内联优化，定时器优化等。前几天刚写完了 golang 1.14 timer 定时器的优化，有兴趣的朋友可以看看go1.14 基于 netpoll 优化 timer 定时器实现原理

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go 理解 Lock-Free

Posted by 夏泽民 Feb 27, 2020

锁是编程中常用的技术, 通常应用于共享内存, 多个线程向同一资源操作往往会发生很多问题, 为了防止这些问题只能用到锁解决. 虽然锁可以解决, 但是在高并发的场景下, 可能会造成性能瓶颈. 无锁编程目前大多数都是基于atomic实现, atomic能够保证数据的正确性, sync.Mutex也有 Lock-Free 的影子.

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