Sping boot integrated rocketmq multi consumer

1, rocketmq installation Installation media Download Download address: http://rocketmq.apache.org/release_notes/release-notes-4.7.0/Download binary installation package Upload to the server for decompression Start command: cd /usr/local/rocketmq/ # 1. Start mqnamesrv first #Start command nohup sh b ...

Posted by jocknerd on Wed, 24 Jun 2020 04:34:39 +0200

k8s uses Nodeport to expose services

k8s uses Nodeport to expose services There are many ways to expose K8s services. Here we mainly study how to expose services through Nodeport First of all, we must understand several concepts before exposing ports: *< 1 >. Server: it is a cluster instance entry composed of accessing backend pod replicas. It consists of: ` [cluster_ip] ` ...

Posted by mrpickleman on Wed, 24 Jun 2020 04:03:57 +0200

Tungsten Fabric solution guide - Kubernetes integration

Author: Tony Liu translator: TF Compilation Group 1 integration of kubernetes and TF In the integration scheme, there are two connections between Kubernetes and Tungsten Fabric. Contract Kube manager and Kube API server Contrail CNI 1.1 contrail-kube-manager This service connects to the Kube A ...

Posted by dmrn on Tue, 23 Jun 2020 11:09:18 +0200

NetCat (nc command) for Linux command learning

brief introduction NetCat, known as "Swiss Army Knife" in network tools, is short and practical (1.84 version is no more than 25k, old version or reduced version or even smaller), and is designed as a simple and reliable network tool, which can transmit read and write data through TCP or UDP ...

Posted by sargenle on Mon, 22 Jun 2020 09:48:38 +0200

OKHttp quick start

OKHttp quick start OKHttp quick start Synchronization request get Asynchronous request get post Set request header Download File encapsulation Interceptor Application interceptor Network connector OKHttp quick start Official website: https://square.github.io/okhttp/ Code warehouse: https:/ ...

Posted by Lodius2000 on Mon, 22 Jun 2020 09:31:27 +0200

Enterprise practice (13) details of LVS load balancing DR (direct routing) mode

What is cluster A group of computers interconnected by a high-speed network and managed in a single system mode. Many servers are put together to provide the same service, which looks like only one server in the client. It can obtain relatively high benefits in performance, reliability and flexibilit ...

Posted by sone_br on Mon, 22 Jun 2020 07:03:24 +0200

Yang Juyi's design mode

1, What is the sharing mode When it comes to sharing element mode, the first thing I think about is pool technology. String constant pool, database connection pool, buffer pool and so on are all applications of sharing element mode, so sharing element mode is an important way to realize pool technology. ...

Posted by jeturman on Mon, 22 Jun 2020 06:09:17 +0200

java Network Programming Practice-Native NIO Non-Blocking Communication Network Programming Practice

Preface Last mentioned to improve our RPC framework, this week take the time to explore the native NIO non-blocking network programming ideas that JDK provides to us.NIO libraries were introduced in JDK 1.4.NIO makes up for the deficiency of the original I/O by providing high-speed, block-oriented I/O in standard Java code. Main differences ...

Posted by nike121 on Mon, 22 Jun 2020 00:19:57 +0200

Mobile GIS Development: mobile base station positioning + offline slice map (vector vtpk + grid tpk) navigation Android APP

catalog Write at the beginning text 1, Interface layout 2, Function realization 1. Display online map and positioning 2. Acquisition and display of base station information 3. Acquisition and analysis of geographic information 4. Display grid offline map (. tpk) 5. Display vector offline map ...

Posted by jesirose on Sun, 21 Jun 2020 12:54:19 +0200

SQL Server database [system design assignment], [teaching management system], [complete code]

Catalogue 1. Textbook [P281-P287] 2. SQL statement [create data table (6 tables), insert data] 2.1. Chinese field representation 2.2. English field representation 3. New view 3.1, 6 table general view 3.2. Total credits (student number, credits) 3.3. Total credit statement 4. Query exercise 1. Textbook [P281-P287] ...

Posted by kutatishh on Sun, 21 Jun 2020 08:04:30 +0200