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system, our lives also revolve around an increasing number of ARM devices-from raspberry pie (raspberry Pi) to Chromebook and Nvidia Shield. Traditional distributions written for CPUs of the INTEL/AMD architecture are not capable of running on these ARM-architecture devices. Some of the distributions written for ARM can only be run on specific hardware, such as the Raspbian system, which can only run on the raspberry pie (raspberry Pi). That's why Ar

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a deeper understanding of the technologies used and the need for more customized products based on the needs of the site.Architecture Evolution Step nineth: Data read-write separation and inexpensive storage solutionsSuddenly one day, found this perfect era also to end, the database nightmare again appeared in the eyes, because of the addition of webserver too much, resulting in the database connection resources is not enough, and this time has been

the requirements for system availability are increasing, this time requires a deeper understanding of the technologies used and the need for more customized products based on the needs of the site. Architecture Evolution Step nineth: Data read-write separation and inexpensive storage solutions Suddenly one day, found this perfect era also to end, the database nightmare again appeared in the eyes, because of the addition of webserver too much, result

increasing demand for system availability, this time requires a more in-depth understanding of the technology used, and needs to be based on the needs of the site to do more customized products. Architecture Evolution Step nineth: Data read-write separation and inexpensive storage solutions Suddenly one day, found that the perfect time to end, the database of the nightmare once again appeared in the eyes. Due to the addition of too many webserver, re

Phppre_replace () highlight text to highlight the words inin nbsp; the nbsp; rooming, nbsp; he nbsp; got nbsp; into nbsp; the nbsp; room, nbsp; when nbsp; he's nbsp; o php pre_replace () highlight text You want to highlight the word in the following text In the rooming, he got into the room, when he's ordered an inexpensive. I wrote it like this, but into, inexpensive, rooming, and in are highl

In the early days of computer development, the price of "large capacity" hard disk is still quite high, the main way to solve the problem of data storage security is to use devices such as tape drive to backup, although it can guarantee the security of data, the work of lookup and backup is quite tedious. In 1987, three engineers, Patterson, Gibson and Katz, published a paper entitled "A case of redundant array of inexpensive disks (redundant array of

this time will be based on the situation to write to meet the needs of the Web site Distributed file system, etc.After doing this, we begin to enter an era of seemingly perfect infinity, and when website traffic increases, the solution is to constantly add webserver.This step involves these knowledge systems:At this point, as the number of machines continues to grow, the volume of data continues to grow, and the requirements for system availability are increasing, this time requires a deeper un

deeper understanding of the technologies used and the need for more customized products based on the needs of the site.Architecture Evolution Step nineth: Data read-write separation and inexpensive storage solutionsSuddenly one day, found that the perfect time to end, the database of the nightmare once again appeared in the eyes. Due to the addition of too many webserver, resulting in the database connection resources is not enough, and this time has

load, such as F5, Netsclar, Athelon and so on, If the funds are not allowed, the plan is to make the application logically classified, and then dispersed to different soft load cluster;2, some of the original state information synchronization, file sharing and other programs may be bottlenecks, need to be improved, perhaps this time will be based on the situation to write to meet the needs of the Web site Distributed file system, etc.After doing this, we begin to enter an era of seemingly perfe

of the Web site Distributed file system, etc.After doing this, we begin to enter an era of seemingly perfect infinity, and when website traffic increases, the solution is to constantly add webserver.This step involves these knowledge systems:At this point, as the number of machines continues to grow, the volume of data continues to grow, and the requirements for system availability are increasing, this time requires a deeper understanding of the technologies used and the need for more customize

site Distributed file system, etc.After doing this, we begin to enter an era of seemingly perfect infinity, and when website traffic increases, the solution is to constantly add webserver.This step involves these knowledge systems:At this point, as the number of machines continues to grow, the volume of data continues to grow, and the requirements for system availability are increasing, this time requires a deeper understanding of the technologies used and the need for more customized products

file system, etc. after these work, began to enter a seemingly perfect era of unlimited expansion, when the site traffic increases, the solution is to constantly add webserver. This step involves these knowledge systems:At this point, as the number of machines continues to grow, the volume of data continues to grow, and the requirements for system availability are increasing, this time requires a deeper understanding of the technologies used and the need for more customized products based on th

products based on the needs of the site.Architecture Evolution Step nineth: Data read-write separation and inexpensive storage solutionsSuddenly one day, found this perfect era also to end, the database nightmare again appeared in the eyes, because of the addition of webserver too much, resulting in the database connection resources is not enough, and this time has been divided into a table, and began to analyze the database pressure state, May find

Disk Arrays, short for RAID (redundantparrayspofpinexpensivepdisks), refer to "cheap and redundant disk arrays. The principle is to use arrays as disk groups and use them in combination with the Design of Distributed Data arrangement to improve data security. The disk array mainly targets hard disks. in terms of capacity and speed, it cannot keep up with the development of CPU and memory, and proposes improvement methods. A disk array is a large disk, which is made up of many

the site.Architecture Evolution Step nineth: Data read-write separation and inexpensive storage solutionsSuddenly one day, found this perfect era also to end, the database nightmare again appeared in the eyes, because of the addition of webserver too much, resulting in the database connection resources is not enough, and this time has been divided into a table, and began to analyze the database pressure state, May find the database read and write rat

: Data read-write separation and inexpensive storage solutionsSuddenly one day, found that the perfect time to end, the database of the nightmare once again appeared in the eyes. Due to the addition of too many webserver, resulting in the database connection resources is not enough, and this time has been divided into a table, and began to analyze the pressure of the database, you may find the database read and write ratio is very high, this time ofte

hardware load, such as F5, Netsclar, Athelon and so on, If the funds are not allowed, the plan is to make the application logically classified, and then dispersed to different soft load cluster;2, some of the original state information synchronization, file sharing and other programs may be bottlenecks, need to be improved, perhaps this time will be based on the situation to write to meet the needs of the Web site Distributed file system, etc.After doing this, we begin to enter an era of seemin

and inexpensive storage solutionsSuddenly one day, found that the perfect time to end, the database of the nightmare once again appeared in the eyes. Due to the addition of too many webserver, resulting in the database connection resources is not enough, and this time has been divided into a table, and began to analyze the pressure of the database, you may find the database read and write ratio is very high, this time often think of data read and wri

of the Web site Distributed file system, etc.After doing this, we begin to enter an era of seemingly perfect infinity, and when website traffic increases, the solution is to constantly add webserver.This step involves these knowledge systems:At this point, as the number of machines continues to grow, the volume of data continues to grow, and the requirements for system availability are increasing, this time requires a deeper understanding of the technologies used and the need for more customize