database-replication

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 8 years ago . I've read about MySQL replication and i need to change some configuration but I can't find the file my.cnf or my.ini. I don't know which MySQL version I have but I've downloaded it a long time ago, as a .zip. My box runs Windows 7 64. Where can i find this file? Should I create it? Where? Thank you. 回答1: I do

问题 I have a reasonable large database with > 40 tables. I only need to replicated a few tables (+/- 5). And each tables is also filtered. I'm looking for some best practices for replicating this data (daily is enough), where i can select just a few tables and included some WHERE clauses for each table. I'm thinking of starting mysqldump for each table (with a where clause) and make for each table a separate .sql file. I then can then truncate all tables (all data is daily overwritten) on the

问题 From my understanding from the below questions which were asked quite some time back, Redis doesn't have a built-in support for master-master replication. Question 1 Question 2 Question 3 The official website as of now looks like there is nothing much to it about master-master replication. Is this still the case, i.e., does Redis still have no options for multi-master replication. And even third-party tools don't seem to be helping Redis achieve the same. I came accross Zabcluster and

问题 I have a requirement where i have create replication between two tables with different names and which have different column names. Is it possible to create such replication. server A server B ---------- ---------- Table : Test Table : SUBS -------------- --------------- columns A,B,C Columns D,E,F,G,H I want to configure replication so that column A data is replicated to column D, column B data is replicated to column E, column C data is replicated to column F 回答1: Apparently, the answer is:

问题 I am working on postgres replication stream API. While working on it came across unusual behavior. When I use replication slot writing whole code inside main block, everything works fine. public class Server implements Config { public static void main(String[] args) { Properties prop = new Properties(); prop.load(new FileInputStream(System.getProperty("prop"))); String user = prop.getProperty("user"); String password = prop.getProperty("password"); String url = prop.getProperty("url");

问题 I am having trouble in my database design. I would like to accomplish all the instances below: 1.) Multi-Master and Single Slave. 2.) Rename database in slave.(Server1 and Server has diff datasets) ]1 Currently i can replicate database by 1 master per slave. But i can't do it the way i want it (Just like the above picture). I read about Multi-source replication in mysql 5.7 but it says that it is not advisable for production. And i don't think that was i'm looking for. I am using ubuntu,

问题 I'm considering how to design a mechanism for replicating a (potentially large) MongoDB or other NoSQL (CouchDB, etc) database to dozens of clients at once. The clients would function like a replica set, but the replication would be one-way and the remote clients would belong to other parties. Specifically, I am looking for the following features: real-time : changes to the master database should be pushed out to the clients as quickly as possible replication to new clients : a new client

问题 We have successfully set up a Master-Slave replication as described in MySQL literature. However, I'm curious if anyone has set up a bidirectional replication. For example, if one has a Drupal or Wordpress installation. The first ('master') database server goes down, and the secondary ('slave') picks up. All the while, users continue to make edits, writing new data. When the First database server is restarted, can changes written to the Second be replicated upward to the First? That is: are

问题 I've been trying to set up two databases as master & slave. I followed the famous guide here: https://dev.mysql.com/doc/refman/5.1/en/replication-howto-existingdata.html But no luck on my slave server, The issue I'm having is setting the server-id variable. No matter where I define it (I looked into all the possible cnf files that might allow me to define the variable) I tried to define it like so: [mysqld] server-id = 2 I also tried setting it by using SET GLOBAL server_id but obviously, it

问题 In the master/slave database replication, all writes go to the master machine. All reads go to the slave machine. The master machine replicates data to the slave. When the master replicates data to the slave, the slave machine has to do a write which would lock up the row. Reading from the slave machine is faster but why? 回答1: The Master is very busy It writes data in parallel (that's obvious) It incurs disk I/O writing to binary logs, serializing the collection of completed SQL into its