db sharding

1,maven Configuration 2,xbdatasource DataSource with sharding JDBC Package @Component public class Xbdatasource {@Autowired DataSource DataSource; DataSource Shardingdatasource; @PostConstruct public void Init () throws SQLException {map 3,mybatisconfig Xdatesource Configuration to MyBatis @Autowired xbdatasource xbdatasource;//integrated SHARDING-JDBC table data source @Bean public sqls

Tags: demo this syn set upper image index return harFirst, the required dependencies are introduced in the Pom file Second, create a new Sharding-jdbc.xml file, to achieve the configuration of the sub-database sub-table Here I briefly introduce the meanings of some properties, Dependent name (according to USER_ID), Algorithm-class: implementation class for Table rules The actual table name of the database, where inline expressions are support

Label:Operations for manual sharding Automatic sharding can result in degraded performance. Therefore, it is reasonable to use manual shards. and use with tag together. # for 4 shard programs, pre-processed instructions1. Join the Shard serverSh.addshard ("192.168.1.60:27017")Sh.addshard ("192.168.1.61:27017")Sh.addshard ("192.168.1.62:27017")Sh.addshard ("192.168.1.63:27017") 2. Start the collection shard

'int( One) not NULL, ' business_id 'int(4)DEFAULT NULL,PRIMARY KEY(' order_id ')) Engine=innodbDEFAULTCharset=utf8;INSERT into' T_order 'VALUES(3,3, the)；Pom.xml io.shardingjdbc sharding-jdbc-core 2.0.0.M2 io.shardingjdbc sharding-jdbc-spring-namespace 2.0.0.M2Spring configuration fileid="Master"class="Com.alibaba.druid.pool.DruidDataSource"init-method="Init"destroy-method="Close"> na

Label:This article will mainly introduce some common global primary key generation strategies, and then highlight a very good global primary key generation scheme used by Flickr. For the split strategy and implementation details of the sub-list (sharding), refer to the previous article in the series: Database Library sub-table (sharding) series (i) Split implementation strategy and sample demo the original

new split pane. Splitter Intersection)Vertical or horizontal split control bar intersection, can be used for Synchronous Control of horizontal, vertical Pane size 4. Shared scroll bars) Lock shardAfter creating a split window, you do not want to adjust the size of the window by dragging the split bar. In this case, you must lock the shard. The simplest way to lock the Shard is to prevent csplitterwnd from processing wm_lbuttondown, wm_mousemove, and wm_setcursor messages. Instead, these me

Sharding has two advantages: Static and Dynamic sharding and static sharding. They are simple, low development costs, and low maintenance costs.Common static sharding methods include Hash Functions and modulo operations, but this exposes a disadvantage (PS: There are many disadvantages ):This disadvantage is as follows

Tags: blog http ar using SP java strong on dataThis text connection: http://blog.csdn.net/bluishglc/article/details/7696085, reprint please indicate the source! This article focuses on the sharding segmentation strategy, if you do not have a basic understanding of the database sharding, please refer to my other article from the basic theory of a comprehensive introduction to

This text connection: http://blog.csdn.net/bluishglc/article/details/7696085, reprint please indicate the source! This article focuses on the sharding segmentation strategy, if you do not have a basic understanding of the database sharding, please refer to my other article from the basic theory of a comprehensive introduction to sharding: The fundamental idea and

I learned about it for a day this weekend and didn't want to learn it any more. After I wrote the first two articles, it took about an hour, if I read more than 80 of the two blogs I just wrote, I will skip this blog. I just saw that one article is exactly 80, and the other is 85 .. Thank you for your motivation. Then I learned about it for a day this weekend and didn't want to learn it any more. After I wrote the first two articles, it took about an hour, if I read more than 80 of the two blogs

Oracle Enterprise 8.0.5 produced by ORACLE won the favor of many users for its superior performance,It provides developers with a wide range of embedded functions, PL/SQL support, multi-platform, Application Server integration, etc.Great flexibility.In ORACLE user permission allocation, only Insert, Update, and,Select, Delete, Execute, and other operations. Field-level permission settings are not provided.Although permission setting brings security benefits, it has a certain impact on performanc

1. Vertical table sharding Vertical table sharding refers to splitting a table with 20 columns into two tables, one table with 10 columns and one table with 11 columns. This reduces the capacity of a single table, it can improve the query performance, reduce the lock row to a certain extent, and lock the performance loss of the strap. What is the principle of vertical table

I talked about database sharding in the previous article. 1. Vertical table shardingVertical table sharding refers to splitting a table with 20 columns into two tables, one table with 10 columns and one table with 11 columns. This reduces the capacity of a single table, it can improve the query performance, reduce the lock row to a certain extent, and lock the performance loss of the strap. What is the

level is limited, the following focuses on range partitioning. Range partitioning, as its name implies, is to divide data based on the value of a field in the table with a fixed range as a partition. 1.1 you can create a table by partitioning the sequence number. Create table test1 1 .( 2. id number not null, 3. JQBH VARCHAR2 (20 ), 4. FJH VARCHAR2 (20) 5 .) 6. partition by range (ID) 7 .( 8. partition part_01 values less than (30000000) tablespace WLKP_FP_DATA_2011, 9. partition part_02 va

How to deal with mysql sub-tables? When there is a large amount of data, how can we store 2 million of the data in a table based on the data volume? how can we use mysql to perform table sharding queries? ------ Solution ------------------ what is the size of the php central control tabulation? We recommend that you flip the mysql Partition. about 5.1 + support the range, hash, and so on ...... Partition method. what can I do with mysql table

Encapsulate your own DB Class (PHP) and db Class php. Encapsulate your own DB Class (PHP). encapsulate db Class php to encapsulate a DB class for special database operations. any operations on the database in the future will be implemented by

Ask a table sharding optimization solution system to have multiple models. each topic of different models has multiple tables, for example: news topic 1 corresponds to data1_1, data1_2 ,.... the additional tables are fujia1_1, fujia1_2 ,... the main tables corresponding to column 2 are data2_1, data2_2 ,.... the additional tables are fujia2_1, fujia2_2 ,... for column 3 of image model image, ask for a table shardi