postgresql sharding

ObjectiveUploading more than 25 images per second and 90 "likes", we've saved a lot of data on Instagram, to make sure that the important data is thrown into memory, to respond quickly to user requests, we've started to shard the data-in other words, put the data in more buckets, each with a portion of the data.Our application server ran the Django and backend is PostgreSQL, after deciding to shard the first question is whether to continue to use

necessarily more than the library sub-table faster. At present, the ultimate consistency of flexible transactions mostly. Another reason for the existence of a sub-table is that too many database instances are not conducive to operations management. In summary, the best practice is to use the Sub-Library + sub-table reasonably. Transaction principle Link sharding-jdbc Introduction SHARDING-JDBC is a databa

(except for extreme customers), but the read library differs from business to There may be many indexes to meet the needs of a variety of queries and simple statistical summary reports.Is it necessarily more important to write a library than to read a library? Yes, it's not. is absolute, not relative. Because the read library is not a DSS library, it is a relatively non-critical business function in the trading library. Therefore, once the library is hung up, it will lead to the business does n

usually used at least in the form of a library to solve the problem of large data volume and high concurrency. This is also part of the open source Shard database middleware support only the reason for the sub-Library. But the sub-table also has an irreplaceable application scenario. The most common table requirements are transaction issues. The same library does not need to consider distributed transactions, good at using the same library table can effectively avoid the problem of distributed

MySQL table sharding auto-incremental ID Solution After we perform the table sharding operation on MySQL, we cannot rely on the automatic increment of MySQL to generate a unique ID, because the data has been distributed to multiple tables. Avoid using an auto-increment IP address as the primary key as much as possible, which will cause great inconvenience to the database table

MongoDB splits the documents in the collection according to the Sharding key, and then assigns them to the members of the Shard cluster.The Shard key can be an indexed field or compound index field that exists in each file.MongoDB uses a different range of sharding key values to split the data in the collection. The different sharding key ranges are non-overlappi

summary table are questionable. My solution is to use a relatively stable service software and architecture in the summary table, such as oracle, or lvs + pgpool + PostgreSQL, to ensure data stability, table sharding uses lightweight mysql with a focus on speed. The ability to use different software and solutions for the total score table is also a major feature of the total score structure.Summary: how to

Recently, we need to perform table sharding and collect some relevant information to find a series of problems caused by table sharding (such as list display and data search), which are expensive and complex, scalability and later maintainability are also complex! I am afraid to use table sharding. I am thinking about MySQL's built-in partition function. Why not.

After mysql table sharding, how does one paging the table (160 million tables in total) after mysql table sharding, there are 15 million tables and 160 million data records? How does one paging the table? Previously, we wanted to use union all to merge 160 Table result sets .. However, the data on the direct card is hidden .. What should I do here? Thank you ~~~ Reply to discussion (solution) What are

From Shard to Sharding The word "Shard" means "Fragmentation" in English. As a database-related technical term, it seems that it was first seen in massively multiplayer online role-playing games (MMORPG) "Sharding" in is called "Sharding ". Sharding is not a new technology, but a relatively simple software concept. As

first, why to use sharding In today's Internet enterprise, the multiplication of data is a very troublesome problem. Because more data is stored in a table in a database, the slower the data is for database operations. However, if we divide the data into different tables according to the specified sub-Library table strategy, we will scan a single table of a library based on the global primary key, which reduces the pressure on the individual librarie

From Shard to Sharding The word "Shard" in English means "fragmentation", and the technical terminology used as a database appears to have been found in large multiplayer online role-playing games (MMORPG). "Sharding" is called "fragmentation". Sharding is not a new technology, but a relatively simple concept of software. As you know, the data table partitionin

PostgreSQL Advantage2016-10-20 21:36 686 People read comments (0) favorite reports Classification:MySQL Database (5)PostgreSQL is a free object-relational database server (database management system), which is very powerful. Includes support for the world's richest data types, such as IP types and geometry types, among others.Many readers have asked the question: If you plan to choose a free, open-source

MySQL: open-source database Sharding technology [figure] from Shard to Sharding The word "Shard" refers to "fragmentation" in English. as a database-related technical term, it seems to have been first seen in massively multiplayer online role-playing games (MMORPG. "Sharding" is called "Sharding ".

MySQL table sharding Methods: MySQL I. Let me explain why Table sharding is required. When a piece of data reaches several millions, it takes more time for you to query the data at a time. If there is a joint query, I think it may die there. The purpose of table sharding is to reduce the burden on the database and shorten the query time. Based on personal experi

Mysql knowledge expansion-database/table sharding MySQL Internet Oracle Enterprise Application Data Structure. database Replication can solve the access problem and cannot solve the large-scale concurrent writing problem. To solve this problem, we need to consider that mysql Data is split into www.2cto.com data segmentation, as the name suggests, that is, data dispersion, data on a single host is distributed among multiple hosts to reduce the load pre

Mysql knowledge extension-database/table sharding bitsCN.com Mysql knowledge expansion-database/table sharding MySQL Internet Oracle enterprise application data structure. database replication can solve the access problem and cannot solve the large-scale concurrent writing problem. to solve this problem, we need to consider that mysql data is split into data partitions. as the name suggests, data is scatter

Author: skateTime: 2013/05/14 MySQL table sharding principles When using MySQL in large quantities and with high data access, we will introduce the MySQL sharding standards to improve the performance of table sharding. Environment:Business type: OLTPHardware:CPU: 8 CPU 2.4 GHzMem: 48 gbDisk: RAID 5 6 × SAS What types of tables need to be split: whether the tabl

This article mainly describes the main principles of the Sharding cluster. Frankly speaking, we just saw that the Sharding system is a bit too tall. I don't understand the American writer KyleBanker Mongodbinaction. First, describe the data with the parts. From other books, sharding is a horizontal scaling of massive data. This article mainly describes the main p

Analysis of table sharding Technology in MySQL * 1. Case Description In the intelligent transportation project, as the number of vehicles in cities increases rapidly, the unlimited growth of the master table will inevitably affect system performance. To keep the database in good performance, we need to adopt the table sharding mechanism. First, you need to understand the benefits of table