performance engineering interview questions

Frontier Dream Workshop 2017-04-18 18:14 Most of the Java interview is divided into written and interview, the following issues are cutting-edge education small series according to the major IT enterprises interview asked the questions sorted out, such as the need for relevant learning materials can leave a mailbox, I

In the morning, there was a traffic jam. I used my cell phone to read Lee Kai-fu's blog article. He said that during the interview with Microsoft Research Institute, he mainly asked several questions: first, whether you are smart, whether you can integrate into the team, and how you are qualified. The questions include:1. "Why is the manhole cover circular ?"2. "

choose an array instead of a ArrayList. If we want to traverse a map in order of insertion, we need to use TreeMap. If we don't want to repeat, we should use set.(2) Some collection classes allow you to specify the initial capacity, so if we can estimate the number of stored elements, we could use it to avoid re-hashing or resizing.(3) programming based on interfaces, rather than implementation-based programming, allows us to easily change the implementation later.(4) Always use type-safe gener

type as needed. For example, if you specify a size, we will choose an array instead of a ArrayList. If we want to traverse a map in order of insertion, we need to use TreeMap. If we don't want to repeat, we should use set.(2) Some collection classes allow you to specify the initial capacity, so if we can estimate the number of stored elements, we could use it to avoid re-hashing or resizing.(3) programming based on interfaces, rather than implementation-based programming, allows us to easily ch

Linux interview questions required for O M 1. What is GPL, GNU, and free software? GPL: (General Public License): An authorization. Anyone has the right to obtain, modify, and re-release free software. GNU: (Plan): it aims to create a completely free and open operating system. Free Software: software that can be freely used, copied, researched, modified, and distributed without restriction. There are two m

People who read "C ++ Object Model" often mistakenly think that the compiler is filled with the length of the computer, as shown below: Class{Double;Char B;}; Sizeof (A) =? People who do not know how to fill in will think it is 9, and those who read the C ++ Object Model (like me) will often think it is 12 《ProgramA similar question in the employee interview book started to think that the answer was wrong .. I did not know after a try today

?What are the Nginx load balancing? If one of the servers hangs up, how does the alarm mechanism be implemented?26. If not optimized, what is the maximum number of Apache connections? Nginx General Maximum number of connections is? MySQL insert per second? Select? Update? Delete?What are the MySQL data types? How much storage space do you use separately?Nginx set Cache js, CSS, pictures and other information, the implementation of the principle of caching?29. How do I increase the cache hit rate

be afraid of difficulties, the courage to challenge, some patterns although difficult, but repeatedly pondering, repeated study, should still be able to conquer.(6) design mode of "Superior" state: "The hands of no mode, the heart has a pattern." The highest level of use of the pattern is that you do not know the definition and structure of a specific design pattern, but you will be flexible to choose a design scheme "is actually a design pattern" to solve a problem, design patterns have become

When interviewing the SQL Server database developer, I used a set of standard benchmark technical questions. The following problems are the problems that I think can really help eliminate unqualified candidates. They are arranged in the order of ease to difficulty. When you ask questions about the primary key and foreign key, the following questions are very diff

Vim Training) SSH security enhancement method, password mode and RSA key mode configuration. Rpm/apt/yum/ports Pack, query, delete the basic commands. (Answer reference this article: Ubuntu Command Daquan series five--software installation) Makefile's basic format, GCC compilation, connection commands,-o0 and-o3 differences. (The answer refers to this article: configure, make, and make install in Linux compilation installation respectively) Basic use of gdb,strace,valgrind.

10 seconds, Server 20 seconds16. What design patterns do you use in your usual development, and can you talk about the usage scenarios of these design patterns? In peacetime, there are more singleton patterns (used when only one object is instantiated in memory), adapter mode (typically the adapter of the ListView and GridView), builder mode (ALERTDIALOG.BUILDER), the observer pattern may be more subtle, In the Android source code baseadapater the implementation of the notifydatasetchanged (? ）

process is more standardized, the amount of manual encoding is reduced, and the encoding efficiency is improved. At the same time, when data is updated, sometimes the component is not required, but it also needs to be re-drawn, which affects the efficiency. Generally, they are used only when building complex projects with multiple interactions and data streams. What are the disadvantages of redux? The data required by a component must be transmitted by the parent component, but cannot be dire

[Finishing]c#. NET common interview questions with Answer (ZT) A friend who is looking for a job may use it. I am not too understand resistance, last week a friend came to me to find a job he tidied up, so I only responsible for posts, the answer to the question to you. --------1. What does object-oriented thinking mainly include? 1 Inherit polymorphic Package//--------2. What is a user Control 2 user contr

This article is reproduced. I hope my friend has a good interview question to study ......1. Check whether the process of Android dvm is the same concept as that of Linux.DVM refers to the Virtual Machine of dalivk. Every Android application runs in its own process and has an independent Dalvik Virtual Machine instance. Every DVM is a process in Linux, so it can be considered the same concept. 2. What is the role of the SIM card EF file?Sim card file

This article is reproduced. I hope my friend has a good interview question to study ...... 1. Check whether the process of Android DVM is the same concept as that of Linux. DVM refers to the Virtual Machine of dalivk. Every android application runs in its own process and has an independent Dalvik Virtual Machine instance. Every DVM is a process in Linux, so it can be considered the same concept. 2. What is the role of the SIM card EF file?SIM card fi

The company needs to split the project and use the Vue framework at the front end. Questions summarized by the last interview vue 1: What is the mvvm framework? What is the difference between it and other frameworks? Mvvm full name Model View viewmodel, model data model, view layer, viewmodel is linked to both The difference is that vue is a data-driven, and the view layer rather than node operations are d

Five typical questions in the English interview and their answering skills Author: Source: English League time: views: Font size: medium or small Following are some typical questions that an interviewer may ask during a job

Baidu Home Login 2017 the most complete 30 Android interview questions, how will you answer?Wing Technologyhundred 03-10 02:32 "Three gold four silver" is also the annual job-hopping season, I believe that a lot of Android programmers began to get ready. However, in the face of the interviewer's question, how will you answer?First, how to understand the relationship between the three Activity,view,window?T

This article is mainly to share with you common PHP interview questions summary, mainly in the form of text and we share, hope to help everyone. 1. Look at your CV and ask about the user volume, PV, throughput, difficulties and solutions of past projects. 2. Database design experience, why do the sub-table? The Sub-Library?How much data do you usually start a table? The Sub-Library? What is the purpose of

C # Summary of related interview questions, Recently, a friend engaged in NET development left the company and asked me to ask him some questions about NET. He was prepared to meet the new challenges. I quickly found various previous collections and questions. Today I will sort out basic NET knowledge points. 1. Three