system design interview questions and answers

many benefits of saving server bandwidth and faster download speed, the most important thing is that if the browser has downloaded the same version of JQuery from the same CDN, it will not download it again. So today, many public websites use jquery for user interaction and animation, and if the browser already has a downloadable jquery library, the site has a great opportunity to showcase it.What is the difference between the Jquery.get () and the Jquery.ajax () methods?The Ajax () method is m

function, and CURL can all achieve this. If PHP and Java are integrated, PHP has built-in this mechanism (If PHP and. NET integration. For example, $ foo = new Java ('java. lang. system ');5. CVS and SVN. SVN is known as the next generation of CVS and has powerful functions. However, CVS is a veteran with a high market share. I have been using SVN for a long time. The question is what tools are used. Well, this may require the following

actionservlet the client request to the JSP component that the Actionforward object points to;-(7) Actionforward object to the JSP component to generate dynamic Web pages, return to the customer; Why to use: The emergence of JSP, Servlet and JavaBean technology provides us with the possibility to build a powerful enterprise application system. But the systems built with these technologies are Fanluan, so on top of that, we need a rule, a rule that

need. Read the Java futuretask example to learn how to use it.7. What is the implementation of concurrent containers?Java collection classes are fast failures, which means that when a collection is changed and a thread iterates through the collection using Iterators, the next () method of the iterator throws a Concurrentmodificationexception exception.Concurrent containers support concurrent traversal and concurrent updates.The main classes are Concurrenthashmap, copyonwritearraylist and Copyon

using parallelism in Core Data is that each NSManagedObjectContext must be accessed only from the process in which it was created . What is the difference between POST and GET for HTTP?The request for a get type is idempotent according to the HTTP protocol, while the POST request has side effects, that is, get is used to get some resources, and post is used to change some resources, which may create new resources or update existing resources.A POST request is more secure than a GET reques

Linux is vast, so that people can always submit different content each time. Our "The-Tecmint-Team" job is to provide some unique content for our readers, which is not only useful for their career, but also increases their knowledge. Here, we will try to do this. As for how much success we can achieve, we will judge it by our readers and friends. We have provided many tutorials on Shell scripting language and interview

, the next () method of the iterator throws a Concurrentmodificationexception exception.Concurrent containers support concurrent traversal and concurrent updates.The main classes are Concurrenthashmap, copyonwritearraylist and Copyonwritearrayset, read this article to understand How to avoid concurrentmodificationexception.8. What is the Executors class?Executors provides some tool methods for the Executor,executorservice,scheduledexecutorservice,threadfactory and callable classes.Executors can

keep the original base implementation. We can just inherit from it and rewrite the methods we need. Read the Java futuretask example to learn how to use it.7. What is the implementation of concurrent containers?Java collection classes are fast failures, which means that when a collection is changed and a thread iterates through the collection using Iterators, the next () method of the iterator throws a Concurrentmodificationexception exception.Concurrent containers support concurrent traversal

solves this problem for us. After the online pool submits the callable task, a future object is returned, using which we can know the status of the callable task and get the result of the execution callable returned. The future provides a get () method so that we can wait for callable to end and get its execution results.Read this article to learn more about the callable,future example. 6. What is Futuretask?Futuretask is a fundamental implementation of the future, and we can use it with execut

Answers to 16 typical interview questions During the interview, the interviewer will ask the applicant, and the applicant's answer will become an important basis for the interviewer to consider whether to accept him. It is vital for candidates to understand the "tricky" behind these issues. This article sorts out some

Linux is vast, so that people can always submit different content each time. Our work of The-Tecmint-Team is to provide some unique content for our readers, which is not only useful for their career, but also increases their knowledge. Here, we will try this label: interview Linux is vast, so that people can always submit different content each time. Our "The-Tecmint-Team" job is to provide some unique content for our readers, which is not only useful

Understanding and practicing answering a few difficult questions before the interview will help you prepare for answering other questions. There are many questions, but some are few, but they are the basis for answering other questions. 1. Why not talk about yourself? Analys

Understanding and practicing answering a few difficult questions before the interview will help you prepare for answering other questions. There are many questions, but some are few, but they are the basis for answering other questions. 1. Why not talk about yourself? Anal

after the real object is called.Proxy mode,The proxy class and the proxy class implement the same interfaceAn instance of a proxy class in a proxy classBehavioral patterns: Focus on communication between objectsSuch as: Responsibility chain mode, iterator mode, command modeResponsibility chain ModelSimilar interceptors, etc.Command mode:Separates callers from Callee's behaviorInterpreter mode:Each syntax is an interpreter classIterator mode:Change the collection class's view traversal and add a

In order to bring you some small surprises, this time we have prepared some questions randomly encountered during the interview, rather than questions about a specific field. These questions will certainly make you stand out in the interview without further learning new know

During the interview, the interviewer will ask the applicant, and the applicant's answer will become an important basis for the interviewer to consider whether to accept him. It is vital for candidates to understand the "tricky" behind these issues. This article sorts out some typical questions that often occur during interviews, and provides corresponding answers