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Scalability design-utilization of cache and search

at least two redundant copies of data for persistence. In addition, we can use some special technologies to replace the databases that require persistence, such as memory cache, search, and Disk File Cache and search. Looking for caches and search outside of the database software to solve the scalability of the data itself has become a very important architecture upgrade actively attempted by various large Internet sites. This not only improves the scalability of the data processing layer in

MySQL performance optimization and Architecture Design-Chapter 1 Utilization of Cache and Search in scalability design, mysql Optimization

location, but is it necessary for us to make all our redundant data persistent? I think readers will certainly feel that this is not necessary, as long as there are at least two redundant copies of data for persistence. In addition, we can use some special technologies to replace the databases that require persistence, such as memory Cache, Search, and Disk File Cache and Search.Looking for caches and Search outside of the database software to solve the scalability of the data itself has become

Explanation of application strategies of optical fiber access technology

) FTTH optical fiber access technology selection in residential areas in China-point-to-point P2P of active Switched Optical Networks in residential areas ActiveOpticalNetwork-AON)Obviously, the advantages of PON are no longer available in high-density residential areas. At present, the PON technology is not very mature, and the equipment price remains high, we believe that FTTH access choice AON technology is more scientific and feasible, because: --

Diverse Broadband Access Technologies

is mature in technology and has a maximum transmission rate of 56 kbps. Technically, it does not rely on the optical access network. The product includes the user's Modem and the Modem pool placed in the telecom data center. Due to its low rate, it is gradually being replaced by N-ISDN and other technologies. 2. N-ISDNN-ISDN, also known as "one-wire" is also a mature, dependent on optical access network of

Summary and Thoughts on Linux clusters in practice

balancing of squid reverse acceleration clusters. It is a professional Hardware load balancing device, it is especially suitable for scenarios with high requirements for new connections and concurrent connections per second. LVS and Nginx are implemented through software, but the stability is also quite powerful, in the case of high concurrency, it is also quite good.3. Nginx is less dependent on the network. Theoretically, nginx can be connected if the ping succeeds and the webpage access is n

Hard Disk Interface

, such specifications are since the 80 has been used in desktop systems as the mainstream of internal storage interconnection technology, Because the use of the field is very extensive time and more than Zhang, so the mature technology brings the large-scale integration of manufacturing low-cost and rapid development of large capacity.Due to the long time unchanged, in the data transmission, this IDE interface hard disk seems to have some lag, because

TD Construction: both technology and service should be hard-handed

progress management method, so as to comprehensively ensure the construction of the TD-SCDMA network. Integrated core network to support sustainable development At present, the core network of mobile communication is evolving towards Softswitch, centralization, IP, broadband, and energy-saving. Nokia Siemens's core network solution is stable and reliable. It is widely used in China and other countries and regions around the world and has been recognized by customers. Its products are designed t

Summary of the types of softswitch protocols

In terms of routes and switches, we have learned a lot about them. Now, let's take a look at the content about the softswitch protocol. Currently, 3GPP uses SIP as the core protocol of the third-generation mobile communication network. In Windows XP, NetMeeting's Softswitch protocol is also changed from H.323 to the SIP protocol. Considering its business flexibility, the SIP protocol will become the future development direction. Comparison Between SIP and BICC BICC is directly oriented to teleph

The most beautiful application-from the perspective of Android Research and development engineers [most beautiful time]

article describes. Technical selection of the standard, are some mature and stable and common function library, avoid the developer flow caused by the code familiar with the cost, the team new members can quickly get started, but also avoid the open source Library hidden bug may cause the version delay, because the more mature open Source Library community more mature

Java memory management and garbage collection

). Therefore, when we are in the garbage collection, we should pay more attention to those young objects.Now, specifically, look at the heap in the JVM:We see that the heap is divided into three generations. The permanent generation (permanent generation) survives in the class object. These objects are not garbage collected. As we have learned in the RTTI, each class object represents a class, contains class-related data and methods, and provides code for the class definition. Each object is cre

PHP open-source project

solution. professional sales training doubles your sales performance and indeed improves your business. It establishes a three-dimensional management system between enterprise management personnel, sales personnel and customers to help enterprises achieve "customer-centric" Comprehensive Management both internally and externally. Sugarcrm is such an excellent customer relationship management software. based on the summary of successful enterprise management managers and the modern cutting-edge

Entrepreneurship guide: 9 military rules that should not be violated

, will schedule their respective departments on the "product release date. Even worse, investors manage their financial budgets based on the product release date.4. emphasize development rather than exploration, learning, and change Mature companies need to implement existing business models for development. In these models, the functional requirements of customer groups and products are known and verified repeatedly. But start-ups should not do this.

English resume how to express your character

How to praise your character in your English resume Some resumes are called "Self-evaluation ". This part is a place to give your speech. Of course, too many beautiful words and too many words will be counterproductive. Therefore, many customers may ask how to present their strengths in a concise and proper manner? This time, our editors will teach you how to describe your personality advantages. Mature, dynamic and honest.

Influence of cloud computing on traditional software engineering

development efficiency and overcome the software crisis. components can achieve software reuse at a higher abstraction level. To improve the degree of software reuse, mature component modules can be used to reduce software development errors and improve software credibility. On the other hand, the development time can be shortened and the development performance can be improved. According to the information provided by 800app, a famous PAAs provider

Next Generation optical network to the path of integration and development

different functions will be adopted in the past. Among these new systems, the most representative SDH is the Multi service Transfer platform (MSTP) based on SDH and the resilient Packet Ring technology (RPR) based on packet switching. The two technologies address the problem of multiple-service delivery in two different directions respectively. At present, the development of MSTP has gone through two stages, the first generation of MSTP is to increase the IP and ATM transmission interface on th

The evolution of Optical network technology

world of light As the infrastructure of Telecommunication network, optical transmission network has made great progress. From the optical fiber line, the transmission is the light signal, but from the tail fiber into the specific equipment or systems, some systems need to be photoelectric conversion processing, and some are directly for the light signal processing. For large systems, the whole optical processing is difficult to achieve (at least the control or management of the signal is not p

Comparison and Development Trend of softswitch protocols

Comparison between H.323 and SIP Currently, 3GPP uses SIP as the core protocol of the third-generation mobile communication network. The NetMeeting protocol in Windows XP is also changed from H.323 to the SIP protocol. Considering its business flexibility, the SIP protocol will become the future development direction. Comparison Between SIP and BICC BICC is directly oriented to telephone applications. It comes from the traditional telecom camp and has a more rigorous system architecture, therefo

Java platform rails: groovy on rails (grails) 0.1 released

When Ruby and rails were red and red, Java fans were not idle, and groovy was developed as a response to Ruby. Now, the response to rails is also coming ~~~~~~~~~~~~~~~ Groovy on rails (grails) 0.1 (0.1 is not 1.0) released Thanks to the mature and powerful Java virtual machines, database drivers, and third-party class libraries, grails does not need to implement much from the ground up. In essence, grails is integrated with spring, hibernate, site

What is the cms content management system based on thinkphp? -Php Tutorial

What is the cms content management system based on thinkphp? What are the more mature ones? In other words, you only need some single functions. instead of setting up 90% of the functions as described in dede, it is best to use thinkphp-based functions. Basic functions: user management, permission management, article publishing, registration and logon, online recharge and payment... Let's introduce some of the Forum's brothers. Reply to discuss

Full-text search engine ElasticSearch or SOLR?

lot of learning to understand, to understand how it works, skilled use of lucene is really very complex.Solr:Apache SOLR is an open-source search platform built on a Java library called Lucene. It provides Apache Lucene search functionality in a user-friendly manner. As an industry participant for nearly a decade, it is a mature product with a strong and extensive user community. It provides distributed indexing, replication, load-balancing queries,

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