architect software

NTP1. Function: Synchronization time. 2. Principle: Layered structure. 3. Software: el6:ntp el7:chrony4.el6 Master profile /etc/ntp.confrestrict 172.25.0.0 Mask 255.255.255.0 --and who's going to do it with me sync server 172.25.0.10 --I'm looking for someone to do synchronous special expression 127.127.1.0 Represents the local system time. Synchronizes with local time, specifying the number of tiers: Server 127.127.1.0 fudge127.127.1.0 stratu

What does a data architect do? Just a design table? That's the first time I can think about it. But it turns out that it's not. The main responsibilities of the data architect are:Data modeling and Analysis (45%)Data loading and delivery (25%)Data availability, performance, security assurance (15%)Data quality and governance (10%)Other (5%) 1. Data Modeling and analysis Understanding the data (understand)U

This program records Introduced Domain Layer Application Layer Infrastructure Layer Web Layer SPA MPA Frameworks/libraries Other IntroducedIn order to reduce complexity and improve the reusability of code, adopting a layered architecture is a widely accepted technique.ABP follows domain driven Design, where there are 4 base tiers in DDD. Presentation (presentation layer): Reference Application layer to provide a user interface.

reasonable allocation of server resources Cpu:apache MySQL in high-load environment, disk IO read and write too much, will certainly occupy a lot of resources, it is inevitable that the CPU occupies too high. Memory: Memory library, database software hard disk: file web2.0 architecture Select MongoDB+redis or mysql+Memcached is a better combination, the logic is simple to use NoSQL current main web site architecture LAMP, LNMP, LLMP now there is a ln

protocol and specification is the most basic, you understand that after the advent of new technologies, you will find déjà vu. can extrapolate, achieve their own open agreement, the internet era, Li style= "List-style-type:square" >1 and other citizens are people who establish norms and agreements 2 and other citizens are the people who provide services 3 and other citizens are people who develop software 4 and

Why do exceptions need to be explained in a separate section? Because exceptions are a special part of software design that requires architects to deal with their own ideas. The general framework does not provide a unified approach, and will be a lot of students forget to deal with, or it is relatively rough processing off. Think of a lot of site errors, users will see a large number of English anomalies, and even execute the SQL are included in the i

Goto: Https://github.com/xingshaocheng/architect-awesome Data structure queue set chain table, array dictionary, associative array tree two fork tree complete binary tree balanced binary tree Red black tree b-,b+,b* tree Common algorithm sorting, lookup algorithm Select sort Bubble sort Insert sort Quick sort Merge sort count sort counting bucket sort base order binary search Jav A sort tool greedy algorithm backtracking algorithm pruning algorithm

. Depicts the process of virtual "evolution" of the main NoSQL family system, namely key-value storage, BigTable type database, document database, full-text search engine, database and graph database: First, we should note that, in general, SQL and relational models were designed long ago to be used for end-user interaction. This user-oriented nature has a very deep impact: End users tend to be interested in summarizing report information rather than individual data items, so SQL does a lot of

Invalid tural design method has been extended to Method System Mission of the pre-architecture stage: to fully understand the needs, so as to grasp the characteristics of the needs, and then determine the architecture design driving force (admems matrix, P2)Conceptual architecture stage: Build conceptual architecture with major demands No-risk software has long been developed!Half of the error is gold, and half of the failure is Bay. Chapter 4 P