The PerfMa community has been newly upgraded to the HeapDump performance community, and set off again!

As developers, we always face various performance problems. They may appear in the application layer, database layer, framework layer, virtual machine layer. Most of the problems can be solved with the help of our usual experience, but sometimes, we also encounter some intractable diseases that are difficult to locate, analyze and solve.

Throughout the major technical communities, there is no shortage of content related to performance, but it is often in a scattered and disordered state;
Searching for some classic performance problems in search engines, it is difficult to quickly find the answers you need in the massive search results, and there is still a lot of duplicate content;
There are also some special problems that are difficult to solve with your own wisdom. At this time, it would be nice if there was an expert in the field of performance who could ask for help.

The PerfMa community was born under this background. Here gathers the industry's top technical experts to answer public welfare questions, hundreds of technical articles to share, and thousands of difficult cases are analyzed in depth. It is a paradise for tens of thousands of technology enthusiasts to learn and communicate.

In the past two years, with more and more small partners joining, the PerfMa community has continued to grow. But we are well aware that our website still has a lot of room for improvement in terms of product experience and content organization.

With the rapid development of PerfMa, the community sector has also received more and more attention and resource support. So, in the enthusiastic July, we upgraded gorgeously! The PerfMa community officially changed its name to HeapDump Performance Community! Heap Dump, also called heap dump file, is a memory snapshot of a Java process at a certain point in time. Analysis of it can help us use memory more reasonably, which is also a very important lesson in the field of performance optimization. We use it as the new name of the community, which symbolizes our determination to work hard in the field of performance and our confidence to become a leader in the field of performance.

update content

1. Revision of the community homepage

(1) Hot news
I have collected all kinds of information that you are interested in. Come to HeapDump to learn and relax.

(2) Popular Q&A
A collection of the most popular help-seeking questions and answers to watch the process of solving difficult problems together

(3) Popular articles
Sorted out the classic articles with the most interactive reading, good content is worth chewing repeatedly

(4) Popular discussions
Here you can discuss the experience of using JVM parameters, you can also complain or praise community product tools

(5) Popular plug-ins
Lego with performance issues-XPocket integrated multiple open source performance plug-ins are waiting for you to try, you can also actively contribute plug-ins

2. Points mall is online

Since the point system was launched at the beginning of the year, many users have been active and accumulated a lot of points, but they have nowhere to "spend". After eliminating all the difficulties, the points mall finally meets everyone! You can redeem various gifts in the points mall for the points you get through signing in, interacting, and contributing content in the community. There are various brand-customized peripheral products, advanced technology books, and popular electronic products!

3. Other upgrades

In addition to the above two upgrades, we will continue to optimize the user experience of our community. In addition to product experience, the optimization of the content direction is steadily advancing. In the future, everyone will see that our community is getting better and better!

Featured Performance Article:

JVM source code analysis of how many threads can a Java process create

Socket (TCP) from the Linux source code

SafePoint and Stop The World full solution (based on OpenJDK 11 version)

Kafka Learning Technology Series Time Wheel

A complete JVM off-heap memory leak troubleshooting record

Why does the container memory usage remain high and frequent OOM

One million long connection pressure test Nginx OOM problem troubleshooting analysis

The lesson of high off-heap memory caused by a compression

JVM source code analysis of the

several kernel parameters of TCP on Linux

major accident! IO problems cause 20 online machines to crash at the same time