Laixintao | SG

Original link: https://www.kawabangga.com/posts/4794 When debugging network quality, we generally focus on two factors: latency and throughput (bandwidth). The delay is better to verify, you can see it by pinging or mtr . This article shares a way to debug throughput. Scenarios that value throughput are generally so-called long fat networks (Long Fat Networks, LFN, rfc7323 […]

Original link: https://www.kawabangga.com/posts/4783 Today, I want to do the TLS feature of iredis based on the PR submitted by users two days ago, and then I suddenly found that the master branch of iredis cannot be built. fail action In order to prevent the action log from failing, here is a screenshot The error is

Original link: https://www.kawabangga.com/posts/4761 Prometheus is a relatively popular monitoring system now. Its working mode is the pull mode: the target to be monitored is responsible for exposing the metris data. The format is ordinary text format and the protocol is HTTP, just like opening an ordinary HTTP service. The same, then Prometheus periodically collects metrics

Original link: https://www.kawabangga.com/posts/4756 Sometimes some processes must be avoided and the restart cost is too high. For example, if there are some long-connected processes, restarting will disconnect the connection, and then all clients need to be reconnected, or a lot of content has been cached in the memory of the process. But there are some

Original link: https://www.kawabangga.com/posts/4728 The startup process of Cordns is not very easy to read, because it is essentially a caddy server, which is developed based on caddy . That is to say, it injects its own logic into caddy, which is equivalent to using caddy as a framework. The actual startup process is actually the

Original link: https://www.kawabangga.com/posts/4718 Sometimes people forget that today’s computer resources are so powerful, how much a $5/month machine can do. Someone was discussing the official website of redis.io before. The number of visits must be huge, and Redis commands can be run in real time. It must have used a lot of machines. It is

Original link: https://www.kawabangga.com/posts/4714 In a distributed system, if service A wants to call service B, and both services have multiple instances deployed, the problem of load balancing must be solved. That is, we want the QPS to reach B to be balanced across all instances of B. In the previous implementation similar to HTTP/1.1, each

Original link: https://www.kawabangga.com/posts/4706 Recently, I am trying to implement the feature of completely disabling color in pdir2 , making it the same as other cli: when stdout is TTY , the output with color is enabled by default, and when stdout is not TTY, no color is output, that is, there is no color-related escape

Original link: https://www.kawabangga.com/posts/4545 When I was working at Ant Financial, I saw and used a lot of poorly designed systems, including the worst thing called an AntX, and I still shudder when I think about it now. The specific implementation has not been remembered clearly, because I have never really mastered it. Just remember that

Original link: https://www.kawabangga.com/posts/4697 The website of Xinxin Company has a very nice promotional video, you can watch it at https://2400.hk/ . This video is available in Chinese at https://www.xd.com/ . Compared with English, I think Chinese is deliberately avoiding translation marks, but it seems that the expression is less powerful than English. It might sound

Original link: https://www.kawabangga.com/posts/4693 After reading an article about my own experience in deleting databases , I felt the same: But, as far as I know, no one ever asked why a junior developer had access to a production database. I probably did need read access, but why write access? And if I did need write

Original link: https://www.kawabangga.com/posts/4689 The overload mentioned in this article is easy to be confused with avalanche. Avalanche refers to that in a distributed system, a certain dependency cannot provide services normally, but the system cannot block this dependency, and eventually the entire system cannot provide services. Overload is when a service receives more requests than