Common monitoring jvm commands

Common monitoring jvm commands A pure smile The command involved in this article is jps jstat jmap jstack jinfo jps Command format jps [options] [hostid] [] optional options parameter list -l: output the full name of the main class or jar path-q: only LVMID(local virtual machine id) is output, that is, the unique id of the ...

Posted by ShadowBlade72 on Wed, 10 Nov 2021 01:45:23 -0800

2019 CCPC-Jiangxi Provincial Competition (Repeat Competition) Part of the Questions

Catalog B - Wave C - String D - Traffic F - Budget G - Worker H - Class B - Wave Topic: Given a sequence of n integers ranging from 1 to c, find a subsequence that has the same number on even digits, the same number on odd digits, and different numbers on even and odd digits. Output the length of the longest subsequence that meets ...

Posted by adredz on Wed, 10 Nov 2021 01:43:01 -0800

Spring cloud learning 3: Eureka service registration and discovery

1, Overview 1.1 process 1.2 architecture Eureka Spring cloud encapsulates the eureka module developed by netfix company to realize service registration and discovery The C-S architecture design is adopted, and EurakaServer is used as the service registry Other services in the system use the client to connect to EurakaServer an ...

Posted by mrneilrobinson on Wed, 10 Nov 2021 01:36:09 -0800

Quickly learn what's new in ES2022

Click on the top to pay attention to the front-end technology Jianghu, learn together and make progress every dayAs a back-end dish, you should actually write more back-end things. However, students like to watch the front-end articles. There's no way 🙄, Two days ago, I saw a student in the Nuggets group who didn't know where to see the new f ...

Posted by toasty2 on Wed, 10 Nov 2021 01:25:36 -0800

[basic reserve for system development] combined use of gazebo three-dimensional physical simulation environment of ROS (Part 9)

Catalogue of series articles Tip: you can add the directories of all articles in the series here. You need to add the directories manually TODO: finishing after writing preface Limited cognition, I hope you will forgive me. If you have any problems, I hope to communicate with you and grow together! This paper first makes a brief in ...

Posted by Spades on Wed, 10 Nov 2021 01:24:28 -0800

Redis has five data types

catalogue introduction 1, String data type 1,SET/GET/APPEND/STRLEN 2,INCR/DECR/INCRBY/DECRBY 3,GETSET 4,SETEX 5,SETNX 6,MSET/MGET/MSETNX 2, List data type 1,LPUSH/LPUSHX/ LRANGE 2,LPOP/LLEN 3,LREM/LSET/LINDEX/LTRIM 4,LINSERT 5,RPUSH/ RPUSHX/RPOP/RPOPLPUSH 3, Hash data type (hash type) 1,HSET/HGET/HDEL/HEXISTS/HLEN/HSETNX 2,HINC ...

Posted by maest on Wed, 10 Nov 2021 00:56:44 -0800

Sharding JDBC realizes read-write separation + sub database and sub table. It's written very well

1. Overview Shardingsphere Jdbc is positioned as a lightweight Java framework and provides additional services in the Jdbc layer of Java. It uses the client to connect directly to the database and provides services in the form of jar package. It can be understood as an enhanced version of Jdbc driver, which is fully compatible with Jdbc and va ...

Posted by kardiostep on Wed, 10 Nov 2021 00:46:07 -0800

Python and Java crawl personal blog information and export it to Excel

1, Scene analysisToday, let's climb my personal blog and summarize my article title and address into an Excel for easy viewing.What bad thoughts can wshanshi have? She just... Wants to summarize her article and related address2, Simple interface analysis:Development all know, open debugging mode. Select Elements, and then find the box where the ...

Posted by abbe-rocks on Wed, 10 Nov 2021 00:41:29 -0800

Deep analysis of core components in Netty based on a large number of images and instances

This article mainly analyzes the core components in Netty in detail.Initiator Bootstrap and ServerBootstrap, as the intersection of Netty's client and server, are the first step in writing Netty's network program. It allows us to assemble the core components of Netty like building blocks. In the process of building Netty Server, we need to pay ...

Posted by stvs on Wed, 10 Nov 2021 00:37:21 -0800

Spring cloud learning 6: Ribbon load balancing

1, Concept: ribbon 2, ribbon utility 3, Realize 3.1 client configuration: spring cloud-consumer-dept-80 uses Ribbon Step 1: first, add two dependencies to the 80 project <!--Ribbon--> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-ribbon</artifac ...

Posted by [-_-] on Wed, 10 Nov 2021 00:37:59 -0800