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The lifespan of kubernetes pods is limited and they are not resurrected, so although each pod has its own IP address, these IP addresses are unreliable and disappear as the pod dies.This poses a problem, if some of the pod's collections (called

Using SQL functions, you can directly calculate the average, total, minimum, maximum, sum, standard deviation, and variance statistics of database data in a query of a SELECT statement. You can also use these SQL functions when using a Recordset

Thoughts on the processing of equalizer information in "Toolsformongo" mongo_detail.pyLet's look at the output of several typical scenarios db.settings.find({‘_id‘:‘balancer‘}) :1. When balancer is never set after MONGOs is created:mongos> var x =

1, the Project profile is the topology diagramThis design uses keepalived and LVS to build a scheduler cluster, to achieve the high availability of LVS scheduler, when the LVS scheduler master down, Keepalived will automatically switch to

On the basis of a summary of the use of OAuth2.0 in the framework, the OAuth2.0 logout process of SSO single sign-on was drawn, today we take a look at the process of obtaining yoghurt information based on user token: /*** Get user information

Server side and client's key system is not the same, called Asymmetric Key system RSA algorithm is based on modulo operation x mod n, in fact: [(a mod n) + (b mod n)] mod n = (a+b) mod n[(a mod n)-(b mod n)] MoD n = (a) mod n[(a mod n) * (b mod n)]

Spring cloud itself provides a lot of components, but we need to follow the business model of the enterprise to customize the common architecture required by the enterprise ...Below I have made the following technical summary for the spring Cloud

The server provides resource-based HTTP for external configuration (name-value pairs or equivalent yaml content). The server can be easily embedded in the spring boot application using @enableconfigserver annotations. So this application is a

First, the purpose of the experiment:? Learn how to extend a simple I/O interface in a PC system? Learn Turnipbit Plug programming? Learn Turnipbit expansion board and DS3231 Clock module connection wiring method? Learning the use of clock

SPRINGMVC uses message converters to automate the transition between request messages and objects, objects, and response messagesOverviewIn Springmvc, you can use the @requestbody and @responsebody two annotations, respectively, to complete the

In the process of Bluetooth enable, multiple threads are created and the threads are bound to the queue. This article mainly analyzes the processing of HCI data this thread.voidBtu_startup (void){. .. btu_bta_msg_queue=fixed_queue_new (Size_max);Btu_

Python3 randomly generates a 6-digit verification CodeRequirements are numbers: 0~9 and uppercase and lowercase letters.#!/usr/bin/env python#-*-coding:utf-8-*-# author:hiuhung wanimport random# 48--57:0-9# 65--90:a-z# 97--122:a-zinde x = 6count = 0

Spring Cloud Finchley was officially released on June 19 on the official spring blog, and we also saw the latest version of the update in the Maven Central warehouse.Finchley official version of the release seems to have experienced a considerable

Read Catalogue 1. Learning Style 1.1 Supervised learning 1.2 Non-supervised learning 1.3 Semi-supervised learning 1.4 Intensive Learning 2. Algorithm classification 2.1 Regression algorithm 2.2 Instance-based

In the previous article, we introduced the GC mechanism in which the GC was judged by what criteria the object could be tagged, and the most effective and most commonly used accessibility analysis method.Today introduces another very common tagging

The default configuration of the Spring-boot integrated es application.properties is:spring.data.elasticsearch.cluster-nodes=localhost:9200　Resolve failed to load Elasticsearch nodes error by changing port number to 9300Extension: If the

The current distributed micro-service cloud architecture platform is built using MAVEN, so Common-service's generic service builds standalone system services according to MavenParticle-commonservice:spring Cloud system service root project, the root

install GCC readline* and so on, or it will go wrong.Yum install gcc readline*-y1. From the Python website to the package that gets Python3, switch to directory/USR/LOCAL/SRC#wget HTTPS://WWW.PYTHON.ORG/FTP/PYTHON/3.5.1/PYTHON-3.5.1.TAR.XZ2. Extract

In our previous blog post, we used direct exchange instead of fanout exchange, and this time we looked at topic exchange.First, Topic Exchange introductionTopic Exchange and direct Exchange are similar and are matched by routing key and binding key,

1. Official http://elastalert.readthedocs.io/en/latest/2. Example of alarm rulesHttp://elastalert.readthedocs.io/en/latest/elastalert.html#rule-typesAdmin_asdsa.yaml: |Name:admin_asdsaType:frequencyOwner:adminDescription: "2018-06-13