grokking system design interview

First, the program design1. Design function System--data table design, data table creation statement, connection database way, coding abilityIi. basic knowledge of the framework1. The basic principle of MVC framework-principle, common frame, working principle of single entry, understanding of template engine2, the characteristics of the common framework--php fram

world's various programmers try and test to solve specific design problems. Design patterns are an extension of code availability.What is a singleton design pattern in 3.Java? Please use Java to write thread safe single case mode4. Explain what is the Observer pattern?The Observer pattern is based on the state of the object and the observer's communication so th

pagesFirst step: The user initiates the request to the front controller (dispatcherservlet)Step Two: Front Controller request processor Mapper (handlermappering) to find the processor (Handle): Find by XML configuration or annotationsStep three: Find the processor mapper (handlermappering) as the front controller returns to the execution chain (handlerexecutionchain)Fourth step: The Front controller (Dispatcherservlet) calls the processor adapter (Handleradapter) to execute the processor (Handl

1. Java Technology System 1.1 Java Programmer• Advanced FeaturesReflection, generics, annotation characters, auto-boxing and unpacking, enumeration classes, mutable parameters, variable return types, enhanced loops, static import• Core programmingIO, multi-threading, entity classes, collection classes, regular expressions, XML, and properties files• Graphic ProgrammingAWT (JAVA2D/JAVASOUND/JMF), Swing, SWT, JFace• Network programmingApplets, SOCKET/TC

Package com. Threadlearn.test; Import java.util.*; Import Java.util.concurrent.locks.ReadWriteLock; Import Java.util.concurrent.locks.ReentrantReadWriteLock; Interview questions, design a caching system; Use pseudocode to implement public class Cachedemo { //Storage object Container private map

model layer data changes, the chart object also changes, meaning that the chart object relies on the data object provided by the model layer, So any state changes to the data objects should be notified immediately.Definition: Defines a one-to-many relationship between objects, so that whenever an object changes, its dependent objects are notified and updated automatically Policy modeFree switching and scaling for algorithmsDefinition: Define some column algorithms, encapsulate each algorith

What does the command nslookup do? Nslookup is a command-line tool that monitors whether DNS servers in a network can correctly implement domain name resolution. How do you show the process with the highest CPU usage? Top-c Sort by CPU What if I check the open ports on Linux and screen out unused ports? Natstat-ltup view open up those ports, not the firewall shield off What is Linux? How does it differ from UNIX? Linux is a free-to-use and free-to-propagate Unix-like operating

designer is the main design development tool, a complete embedded system will be generated by it.The process of developing a Windows XP enbedded is as follows: Create a new configuration--Add components--Set component properties--component dependency checking--to generate a mirror.To open Target Designer in the Start menu, first create a new configuration: Click on the "New" button on the toolbar to enter

I really don't know the answer to these things because I was abused by the blood of impaired glucose. I was told with knowledge: I went to the interview today. I went into the exam and asked my questions first. The questions are not difficult. Some basic questions include tcpudp protocol differences, hierarchical models, implementation of strcpy, and extra large data groups. After the test is completed, go to the