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  Detailed explanation of Mongodb sharding principle and Architecture deployment

  Demand pain points solved by sharding technology (1) database applications with high data volume and throughput will cause great pressure on the performance of the stand-alone machine; (2) a large amount of queries will exhaust the CPU of the stand-alone machine; (3) a large amount of data will cause greater pressure on the storage of the single machine, which will eventually deplete the memory of the system and transfer the pressure to the keyboard I.

  2022-06-01 15:23:51 Views: 272
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  AIX 5.3installation error case of Oracle 10g-ruInstaller

  AIX 5.3 installation of Oracle 10g error case-runInstaller system Environment: operating system: AIX5300-08Oracle Software: Oracle 10g (64 bit) error phenomenon: customer an AIX host, previously installed

  2022-06-01 15:23:44 Views: 230
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  Improve efficiency-automatic copy shutdown

  DEL / F / A / Q D:\ vm_work\ For_test\ RHE5_WITH_ORACLE_INSTANCEDEL / F / A / Q D:\ vm_work\ For_test\ RHE5_WITH

  2022-06-01 15:23:44 Views: 289
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  Use the command crs_stat-t in Oracle to output the meaning of the resource name suffix

  [grid@udevasm:/] $crs_stat-tName Type Target State Host-

  2022-06-01 15:23:44 Views: 271
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  MongoDB combined with PHP

  There was a previous article that introduced the installation and use of MongoDB: http://msiyuetian.blog.51cto.com/8637744/1720559 the following article mainly introduces how PHP can connect to MongoDB.

  2022-06-01 15:23:36 Views: 295
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  Rman backup level and backup script

  Basic knowledge of Rman backup level and backup script: Oracle backup level is divided into level 0 and level 2; but level 2 is not commonly used. Here, level 0 > level 1 > lev

  2022-06-01 15:23:36 Views: 242
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  The working principle and replication mode of redis master-slave replication

  This article will explain in detail the working principle and replication mode of redis master-slave replication, the content of the article is of high quality, so the editor will share it with you for reference. I hope you will have a certain understanding of the relevant knowledge after reading this article. The master-slave replication mechanism of Redis means that subordinate servers can be made available.

  2022-06-01 15:23:36 Views: 289
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  MySQL highly available MHA check scripts

  Several MHA check commands are introduced and the output is as follows: [root@MHA bin] # pwd/usr/local/bin [root@MHA bin] # ls-ltotal 104-r-xr-xr-x. 1 ro

  2022-06-01 15:23:35 Views: 218
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  Understand the default ObjectID of MongoDB

  BSON ObjectID SpecificationA BSON ObjectID is a 12-byte value consisting of a 4-byte timestamp (seco

  2022-06-01 15:23:35 Views: 219
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  Database query statement

  Insert data INSERT syntax structure INSERT [INTO] < Table name > [column name] VALUES < values list > Parameter explanation [INTO] and [column name] optional < Table name > is required if the order of [column name], < values list > and fields in the table is omitted

  2022-06-01 15:23:35 Views: 293
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  Database principle and application technology, learning notes

  Database principle and Application Technology Miao Xuelan, Song Song author Learner: he ◆ Chapter 1 Overview of Database system > > Database is a new means and technology of data management. Information is new and useful facts and knowledge. > > data (Data) is a physical symbol used to carry information. > >

  2022-06-01 15:23:35 Views: 234
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  Changes and improvements of MariaDB 10.4.6 (GA)

  1. Support ALGORITHM=INSTANT calculation legislation for DROP COLUMN deleted fields: alter table T1 drop column name,ALGORITHM=INSTANT;MySQL 8

  2022-06-01 15:23:22 Views: 217
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  What are the characteristics of Redis Sharding cluster

  This article will explain the characteristics of Redis Sharding cluster for you in detail. The content of the article is of high quality, so the editor will share it with you for reference. I hope you will have a certain understanding of the relevant knowledge after reading this article. Redis Sharding Cluster Red

  2022-06-01 15:23:22 Views: 273
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  What is the Sentinel in redis?

  This article is to share with you about the sentinel mechanism in redis. The editor thinks it is very practical, so I share it with you to learn. I hope you can get something after reading this article. Redis high availability: if you make master and slave architecture deployment, its

  2022-06-01 15:23:22 Views: 261
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  RemoveIPC=yes 's RHEL7.2 will crash Oracle asm instances and Oracle database instances.

  An instance of 11204 library on centos7.2 is crash. Check alert and find the following: Wed Sep 21 00:00:11 2016Errors in file / apps/oracle/diag/r

  2022-06-01 15:23:22 Views: 278
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  How to solve the problem of brain fissure in redis Cluster

  How does redis cluster solve the problem of brain fissure? In view of this problem, this article introduces the corresponding analysis and answers in detail, hoping to help more partners who want to solve this problem to find a more simple and feasible way. What is redis's clustered brain fissure? Redis's cluster brain fissure refers to the fact that

  2022-06-01 15:23:18 Views: 268
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  The method of interaction between FineReport single Line and Database

  1. The problem describes that when we do a report, we often encounter the need to add action on a row, interact that line of data directly with the database, and execute the stored procedure. We can add the soft "insert" button to each line to achieve the insert action, and add and database in the control event.

  2022-06-01 15:23:16 Views: 257
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  The role of redis Cluster

  This article will explain in detail about redis cluster, the content of the article is of high quality, so the editor will share it with you for reference. I hope you will have a certain understanding of the relevant knowledge after reading this article. The so-called cluster is to provide the same service by adding the number of servers.

  2022-06-01 15:23:13 Views: 287
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  MySQL semi-synchronous replication-advantages, disadvantages, configuration

  When it comes to semi-synchronous replication, we have to talk about three methods of replication: asynchronous replication: for asynchronous replication, after the Master host writes events to the binlog log, there is no guarantee that all events have been replicated to the slave host, so if between Master and Slave

  2022-06-01 15:23:12 Views: 218
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  Why should redis Cluster use Master-Slave replication function

  Why do redis clusters use master-slave replication? Many novices are not very clear about this. In order to help you solve this problem, the following editor will explain it in detail. People with this need can come and learn. I hope you can gain something. In order to make the cluster offline on some nodes or unable to communicate with

  2022-06-01 15:23:12 Views: 233