Deep Understanding of iOS Crash Log

Crash Log There are two main sources of Crash Log: What Apple provides can be copied directly from the user's device or downloaded from iTunes Connect (XCode) Three-party or self-research Framework statistics, three-party services including Fabric, Bugly and so on. The Crash Log mentioned in this article is provided by Appl ...

Posted by tcollie on Sat, 11 May 2019 17:39:20 +0200

Java Thread Pool Implementation Principles and Technologies, Read this article is enough

01. Disadvantages of unrestricted threads Multithread software design method can really maximize the computing power of multi-core processors and improve the throughput and performance of production systems. However, if threads are used arbitrarily without control and management, the performance of the system will be adverse ...

Posted by Glyde on Sat, 11 May 2019 15:05:51 +0200

CentOS 7.4 builds a three-node replica cluster of MongoDB4.0 based on user authentication

mongoDB officials no longer recommend using master-slave mode. Instead, the replica set mode is adopted. click For example, So what is a replica set? World of Warcraft always talks about duplication, but in fact these two concepts have almost the same meaning. Duplicate in the game refers to players concentrating on a scene during rush hours ...

Posted by run2web on Sat, 11 May 2019 13:13:03 +0200

RabbitMQ Work Model for Distributed Message Communication

This chapter focuses on: 1. Introduction of three main switches 2. SpringBook Integrates RabbitMQ Switches 3. Dead letter queue 4. Priority queues and messages 5. Server Flow Control 6. Current Limitation at Consumer End Features of RabbitMQ  RabbitMQ is written in Erlang language and messages are stored in a Mnesia databa ...

Posted by DevilsAdvocate on Sat, 11 May 2019 12:26:50 +0200

Use of Android Binder

1. Creation and parsing of AIDL files Binder is still relatively simple to use. Create an IBinderPool.aidl file and clean it. You can generate a Java file for us. // IBinderPool.aidl package com.example.binder.aidl; interface IBinderPool { IBinder queryBinder(int binderCode); } The generated Java files are as follows: /* * Th ...

Posted by robviperx on Sat, 11 May 2019 00:13:42 +0200

Lesson 12: Running in the Background (based on Android Studio 3.2)

Now that we have some knowledge of UI elements and screens, we need to make them responsive. Response is not just about speed - how much work you can accomplish over time. What's more important is how fast the application is. When people say that the application responds, they usually mean that the application will not prevent ...

Posted by Lukeidiot on Fri, 10 May 2019 23:17:10 +0200

Examples of PHP and Redis implementing snap-up and secondkill in high concurrency

Snap-up and second-kill are common scenarios. Interviewers often ask questions during interviews, such as how to achieve the snap-up second-kill in Taobao. Buying and killing in seconds is very simple, but there are some problems to be solved, mainly for two problems:1. Pressure on databases caused by high concurrency2. How to ...

Posted by philooo on Fri, 10 May 2019 20:28:18 +0200

Start using Spring Data JPA

Since we have just released the first milestone of the Spring Data JPA project, I would like to give you a brief introduction to its functionality. As you may know, the Spring framework provides support for building a data access layer based on JPA. So what does Spring Data JPA add to this basic support? To answer this que ...

Posted by CreativeWebDsign on Fri, 10 May 2019 18:54:01 +0200

Graphql combat series

Former love introduction stay Graphql Series of Actual Warfare (Part I) We have completed the technical selection and bridged the graphql Gel gels In the project, and dynamic handwritten schema, through http://localhost 5000/graphql view effect. In this section, we automatically generate the basic query and update schema according to the databa ...

Posted by bird_man11 on Fri, 10 May 2019 09:00:20 +0200

Simple use of Mybatis framework

1. Configuration process 1. Process diagrams (implemented through XML mapping files): 2. Process: 2.1 Import package: 2.1.1 Download Package Database Driven Package (this article takes MySQL as an example): https://mvnrepository.com/artifact/mysql/mysql-connector-java Mybatis Framework Package: https://mvnrepository.com/artifact/org.myb ...

Posted by VK4KBG on Fri, 10 May 2019 03:06:03 +0200