Programmer Group

Recently, I changed my notebook. In the new working environment, the jmap command is reporting errors, while jps, jstat, jinfo and jstack can be used normally, so the problem of process number is preliminarily eliminated. Attaching to core 17536 from executable heap, please wait... Error attaching to core file: Windbg Error: OpenDumpFile failed ...

Original Link: https://my.oschina.net/zipu888/blog/549581 Source Version: 2.4.4 Update 2014.3.17, base 2.8.7 The master-slave replication of redis is simple but powerful with the foll ...

Summary: Very interesting operation. Original: Realization of web Page Recording Screen Translator: frontdog Fundebug Copyright shall be owned by the original author upon authorization to reproduce. Written in front After reading the comments, I suddenly realized that I didn't explain it in advance. This article can be said to be a research ...

redis persistence Redis is a memory-level caching program, that is, redis uses memory to cache data, but it can save the data in memory to hard disk according to certain strategies, so as to achieve the purpose of data persistence. redis supports t ...

From the previous article, we briefly analyzed the okhttp request process.( Okhttp Source Code Analysis (I) Today, let's take a look at the core of okhttp. Put a picture first. okhttp network requests adopt a hierarchical + Chain structure. Ea ...

Custom View (Canvas, Paint, Bessel Curve) Catalog Custom View (Canvas, Paint, Bessel Curve) Draw a circle on Canvas and save it with Bitmap On the path, draw circles in turn to form line animation. Drawing multiple paths at the same time I ...

Intrusion Link Tracking APM with Pinpoint I. Intrusion Link Tracking APM Application Performance Management (APM)It means to monitor and optimize the key business of an enterprise, to improve the reliability and quality of its business, to ensure that its customers receive good service, to reduce the total cost of IT operation and maintenance, ...

Today we continue to talk about the implementation of blocking queue. Today's protagonist is Priority Blocking Queue. From the naming point of view, it should be orderly. After all, it's priority queue. So what's the actual situation? Let's look at its internal implementation together and explain in advance, because Priority Blocking Queue is i ...

Yesterday it took an afternoon to write a little reptile to analyze its fan data. This is fun! Today, I helped a lot of big V s in the group to climb their data. Running speed: more than 5,000 fans per minute. For the time being, I have to prepare for the make-up exam these two days, so I don't have time to continue playing with it. Next impr ...

follow https://github.com/jiangkang/flutter-system Learn more about Flutter PPP that cannot make network requests is not a real APP. Flutter currently does not have a very reliable open source library (unsatisfactory) for network requests. Please use http temporarily to fulfill simple network requests ...