system design interview book

. In IOS games, you can set the boxing training method and training time for players to have more options, and make each choice affect the gameplay of the entire game. When you lose a game, you may think about whether you have made the wrong choice .] The book provides some examples:Army configuration in Real-Time Strategic games (RTS) or turn-based strategic gamesIn role-playing games (RPGs), The role can be allocated during the upgrade process. N

program modules and then to integrated modules, carefully design test plans, as much as possible to cover the program logic to meet the requirements of the possibility.2 Test Cases2.1 Login Module TestEnter the system, enter the user name and password, according to the user's identity, the display of the Operation menu is different, the general reader can only view the

is in the process context when it executes system calls.(2) The current pointer points to the present task, which is the process that raised the system call.(3) In the context of the process, the kernel can hibernate and can be preempted.(4) System_call () is responsible for switching to user space and letting the user continue execution when the system call ret

of the author to add and, and finally with a period.The specific format is as follows:Format---------------------------[Serial number] Author 1, author 2, author 3. Title [M]. Place of publication: Publishing Unit, publication year[1] Zheng Qi, Fang Dawei, Liu Yunfeng. Asp. NET project development case full record (2nd edition) [M]. Beijing: Tsinghua University Press, 2011Zhaolina, Zhou Jihshun. Design and implementation of online course selection

到其中的一个子进程退出，此时函数返回该子进程的PID。 When you release the process descriptor, you need to call Release_task (). 3.5.2 Orphan Process Overview: The parent process exits before the process, leaving behind the child process, the orphan process The workaround: Finds a new parent process within the current thread group for the orphan process, or directly with Init as its parent process Call Order: - do_exit()-- - >forget_original_parent()- - >find_new_p

The basis of large-scale system reconstruction is still the reconstruction method described in this book, but the overall complexity makes restructuring more difficult. Mastering these refactoring techniques is extremely beneficial for restructuring large systems. However, the reconstruction of large systems, especially complicated legacy systems, has higher requirements for developers. In addition, it not

A few days ago, I browsed it roughly. It was quite good. It made me understand what a real distributed architecture is and what I used before.ProgramLayering is not the same thing. I used to write a "standalone version" program, so I don't feel the benefits of layering. The original layering came from distributed... This book introduces the following knowledge points: Component Technology and classification (divided into service providers and inf

- 设置关注变量 - 18.9 detection system 18.9.1 using UID as selection criteria if (current->uid! = 7777) { / old algorithm / Else { / New Algorithm / } 18.9.2 Using condition variables You can use conditional variables if your code is not process-independent, or if you want to have a mechanism that can be used for all situations to control an attribute. This is easier than using UID, just to create

Technical suggestions on using XMLType for Synchronous content in Address Book Database Design Zhou Peng 2005-02-20 Oracle 9i (9.0.1) Support for XML Technology XML built-in features provided by Oracle 9i: Oracle 9i supports the XMLType type, which is an object type defined by the Oracle 9i system. XMLType has built-in functions that provide powerful functions su

(P7)It is recommended to join the software company directly, so you will learn a lot of practical things;The main development direction of programmers is the senior technical experts, whether it is Java,. Net or database domain, must first become an expert, and then may continue to evolve into an architect;enhance the initiative and participation of the work;only with a higher vision can we seek greater development;(P10)Job- hopping is required cost, this cost is your accumulated work experience

(P7)It is recommended to join the software company directly, so you will learn a lot of practical things;The main development direction of programmers is the senior technical experts, whether it is Java,. Net or database domain, must first become an expert, and then may continue to evolve into an architect;Enhance the initiative and participation of the work;Only with a higher vision can we seek greater development;(P10)Job-hopping is required cost, this cost is your accumulated work experience,

like user spaceThe memory in the kernel is not paged. Difficult to perform floating-point arithmetic during kernel programming The kernel gives each process only a small fixed-length stack Because the kernel supports asynchronous interrupts, preemption, and SMP, you must always be aware of synchronization and concurrencySMP: Symmetric multi-processing system. Common ways to solve competition: spin locks and semaphores. To consider the

. reading a book is like watching a woman. In fact, what I want to say is that every author cannot fully express his thoughts through text or books. Furthermore, from the perspective of his own reading, what he cares about, it is not necessarily what the author wants to explain. Therefore, reading this book will make you feel uncomfortable, but you will always find their highlights. Article 2: Reading refer

_ Get _ priority _ Max () returns the maximum and minimum precedence for a given scheduling policy 2. System calls related to processor bindings Linux Scheduler provides mandatory processor binding mechanism In a CPUs _ allowed bitmask in a task _ struct Sched_setaffinity () sets a bitmask of different combinations of one or several bits Sched _ Getaffinity () returns the current cpus_ allowed bit mask 3. Discard Proces

queue, and then call Schedule () to select and execute a different process.The process of waking up is just the opposite of the process being set to executable state, and then moving from the wait queue to the executable red-black tree.4.6 Preemption and Context switching4.6.1 User preemptionArises in the following cases:When the user space is returned from the system, when the user space is returned from the interrupt handler;4.6.2 kernel preemption

entries that do not copy the parent process.The implementation of the Vfork () system call is done by passing a special flag to the clone () system call.3.4 Implementation of threads in Linux3.4.1 Creating ThreadsCreating a thread is similar to creating a normal process, except that you need to pass some parameter flags when invoking clone () to indicate which resources need to be shared:Clone (CLONE_VM |

: Linux private dishes from brother BirdIn addition to using the test command to make conditional judgments, I can also use [] (the syntax of the brackets to judge the test parameters and tests).[] The syntax requires a space between all the quantities in [], eg:[B "$name" B==b "Xiaoyi" b] #b都表示空格Three Complex scripts3.1 Article Statementsif Else 's standard format:If [conditional judgment 1]; Then command1elif [conditional judgment 2]; then command2else Command3fiWhere conditions can be

This article is a computer class of high-quality pre-sale recommendation >>>>C Safety Coding Standard: the development of safe, reliable, stable system of 98 rules (Original book 2nd edition)Partial catalogsTranslator SequencePrefaceContributors ' profile1th Preprocessor (PRE) 11.1 pre30-c. Do not create a universal character name from a connection 11.2 pre31-c. Avoid side effects of unsafe macro Parameters

(i) Project function analysisThe project is to design a book management system that mainly contains content that has(1) Admin Login interfaceInformation entryLoginReset(2) Total interface of book management systemSub-Interface Menu:1) Book category add sub-interfaceBook Cate

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