distributed systems concepts and design

Write at the top: 1. Why learn and record distributed design concepts a series of related things In the day-to-day system design review, there are often some colleagues throw concepts, high availability, consistency, and so on, they use these basic

?-Gracefully Handle the case of intermittent network or disconnection. Finally, you need to consider how to present the page in the event of a network exception when developing the app. I don't know. Every time the network is out of the question, a dialog box pops up. And I'm definitely not going to pop a bunch of cue boxes when a series of network errors occur. I will try to tell the user that the app is processing the request, and if a problem occurs, the user can continue until the request is

, the author mainly says, although you are the application developer, but you actually cannot grasp when to update the application, including the application running environment; This is the author said that more than one manager. In fact, each user is the manager of your app.2, the author said the local update, I am deeply have experience. Make a previous one even if the communication tool, the data will be saved locally, and later not only need to support the text also need to support voice, p

formats are difficult to parse across multiple devices. This is not a big deal for services that revolve around a core server, because it provides the client with the data format that it needs and can interpret different types of data. But for applications that need to provide point-to-point communication (for example, Gamekit), an iOS app communicates with an Android app, or a different version of the app, which can be a big hassle.Original address: http://blog.carbonfive.com/2010/12/06/iphone

CMU 95702 Distributed Systems notes. A brief introduction to XML-RPC, SOAP, REST Three Web service implementations and RPC, message, Resource three kinds of patterns.Web Service Implementation Scenarios There are three major Web services implementations, because XML-RPC is gradually replaced by soap, so it can be said that the mainstream Web services implementation is only REST and SOAP two kinds. REST: Cha

servers are processed in the order in which they are sent. So the server may receive a request to delete information, and the server actually receives the request to create the information. In a recent application development, we will fill in the serial number in all requests, the server side will have a queue to save the received request. If a request is not received in the middle of the sending pair of columns, the server does not process any requests after it, guaranteeing that the request c

the article needs to be organized 2015.3.13 Revision Distributed systems typically serve large requests, maintain big data, respond quickly, and are available for long periods of time. There are a lot of things to consider when designing a distributed backend service, this article gives some common design guidelines fo

conversion, database application system design.7. Basic concepts of transactions and types of database system faults, implementation technologies of database recovery and database recovery strategies.8. data inconsistency caused by concurrent operations. Use the three-level blocking protocol to solve the data inconsistency problem in concurrent operations, and use the two-segment lock protocol to ensure se

, transmission and so on. 4. Distributed objects do not support deployment. All of this can be solved in a distributed component.Ii. Distributed Objects1, the Distributed object is developed by the following 3 phenomena: 1, in the distributed system, people's expectations of

. It is designed with ease of programming and uses a data model similar to the directory structure of a file system. The ZooKeeper service runs in the Java environment and can be used in Java and C.As we all know, it is difficult for the Coordination Service to meet the correct conditions, especially problems such as competition conditions or deadlocks. The original intention of ZooKeeper is to ease the coordination of services in distributed applicat

Open source has become the basic principle of some large web sites. And as these sites grow, some of the best practices and rules appear in their structure. The purpose of this paper is to introduce some key problems in the design of large web sites and the basic work to achieve them.This article focuses on the introduction of network systems, although some of the guidelines are also applicable in other

For distributed systems, we must deeply understand and remember one thing: the unreliability of distributed systems. "Reliability" means that the system can run continuously without fault, and if a system is accidentally down or is not working properly, then he is an unreliable system, even if the downtime and unusable

system is also a distributed file system. AFS's initial design goal was to serve large-scale users and nodes, and his high scalability was a major feature of the device. One of his most effective strategies is to cache hundreds of users ' most recently used files in the client.1, AFS includes 2 important components, Venus and Vice, the former client, the latter in the server. The file service is implemente

(WJW) External zookeeper-based Glusterfs as a fully distributed HBase cluster Installation guide for Distributed file systems[X] Prerequisites Server list: 192.168.1.84 hbase84#Hbase-master 192.168.1.85 hbase85#Hbase-regionserver,zookeeper 192.168.1.86 hbase86#Hbase-regionserver,zookeeper 192.168.1.87 hbase87#Hbase-regionserver,

. Mnesia is a multi-user Distributed DBMS written in Erlang to implement industrial telecom application systems. Erlang is also an ideal language for mnesia operations. Mnesia tries to cover all the issues related to data management in telecommunications systems. It has many uncommon features in traditional databases. Telecom applications have many feature requir

Objective As a complicated subject, the Distributed system computing needs the readers to have good basic knowledge of computer. With the support of these theoretical knowledge, we can better read, learn the current mainstream distributed systems and frameworks. The author recently began to learn the knowledge of distributed