Programmer Group

Author: Youmeng + technical expert Yanke1, BackgroundApplication performance stability is a key link in a good user experience. In order to better ensure the stability of application performance, exception capture plays a vital role in ensuring the stability of online products. Our team launched U-APM mobile application performance monitoring p ...

IntroductionWith the increasing complexity and diversity of cloud computing network environment, the problem of occasional network jitter has become a major problem for cloud services. However, when dealing with such problems, the traditional network performance tools (sar, ss, tcpdump, etc.) based on kernel internal statistics and network pack ...

The data system in the group cannot meet the performance requirements when undertaking a business requirement, so some optimizations are made for this scenario, and an article is written here for records. The business scenario is as follows: the caller obtains hundreds of characteristics of a user at a time (characteristics can be understood a ...

1px at mobile end Problem Description: 1px border. Under the HD screen, the 1px of the mobile terminal will be very thick. Cause: first of all, we need to understand a concept: DPR (device pixel ratio), which is the ratio of device pixels to CSS logical pixels when the default zoom is 100%. At present, the mainstream screen DPR=2 or 3. PX set ...

backgroundRecently, a self-developed Dubbo registration center in charge often received alarms about CPU utilization, so it carried out a wave of optimization with good results. Therefore, it plans to share the thinking and optimization process, hoping to help you.What is the Dubbo registration center? I'll draw a sketch. Just feel it a little. ...

https://www.cnblogs.com/bbqzsl/p/15510377.html Recently, during optimization, some functions were bench tested on different compilation platforms . Found a lot of problems. Now let's share one of the questions. 1 typedef float MAFloat; 2 3 MAFloat sma(const MAFloat* seq, const int cnt, const int N, const int M) 4 { 5 const MAFloat C ...

Solve the problem of creating too many threads for Go file operation github code repository A remote file performance test service implemented using Go. It is used to record the tuning process and solve the problem of too many threads created by Go processing blocked file IO. 1. Configuration There is a config.json configuration file on the ...

Optimize Ngxin for increased security and high concurrency By optimizing Nginx settings, Nginx enhances security while supporting more concurrent requestsTune Nginx's host Linux kernel parameters to make them more compliant with Web servers that support high concurrent access Nginx configuration optimization Edit nginx.conf configuration fil ...