Mysql Master Slave replication performance is too low
I have implemented Master Slave Replication. The slave can't keep up with progress. How can I find out the problem and optimize the config? OS: CentOS 6.8 Mysql 5.6.35 Master => Slave 3-5 Mbps...
View ArticlePausing AlwaysOn Availability Group replication for failover
We are currently implementing a new software package which has one part of its system using database replication (but doesn't support AlwaysOn Availability Groups) replicate from another database that...
View ArticleTransactional Replication to Azure SQL DB - How to Encrypt data?
My organisation is considering using Transactional Replication to Azure SQL DB but unsure where encryption and security fits in to this new capability. We are looking for documentation on how to...
View ArticleCloudFront CDN for S3 bucket which is cross region replicated
Given yesterday's us-east-1 S3 outage, how do I best architect a CloudFront CDN which uses a S3 bucket as the source and the bucket is setup to replicate to another region? Do I setup two separate...
View ArticleHow to restore several databases with binlogs?
I need to restore 3 databases but I don't have the backups of the, I investigate that it can be done with the binlog files, but how does that work when you have several databases that need to be restored?
View Articlerecovery with binlogs?
I would like to know if there is a way that I can restore my databases, I don't have a replication and I would like to migrate my databases without downtime or losing data. So with binlogs could I do...
View ArticlePostgres Streaming Replication interrupts queries
Postgres master and slave version: PostgreSQL 9.5.4 on x86_64-pc-linux-gnu, compiled by gcc (Ubuntu 4.8.2-19ubuntu1) 4.8.2, 64-bit I've successfully setup replication using SR in Postgres where slave...
View ArticleWhat can cause mongodb replset to be so slow?
This is the first sync to the primary node: 2017-03-03T02:26:22.035+0100 I - [repl writer worker 3] prodbase.offer collection clone progress: 283940/5543302 5% (documents copied)...
View ArticleHow to stop Log Reader Agent from SQL/Command Line
Say I've got replication on a SQL Server 2012 box set up. Everything is working as expected, and the Log Reader Agent is running. Now, say that I need to remove all traces of this...
View ArticleHow to avoid Insert and Update conflict in SQL Server Merge Replication?
I have developed a web application using Asp.net Rest Api, Entity Framework code-first approach. I have publisher with 20-30 subscribers. All my subscribers may work online or offline. After setting...
View ArticlePossible to get equivalent MySQL bin log position on another server?
Let's say we have three MySQL servers, mysql1, mysql2 and mysql3. Replication is set up such that mysql3 is the slave of mysql2, and mysql2 is the slave of mysql1. At some point I take a dump of...
View ArticleSQL Server Replication - FTP Snapshot: Policy requires SSL
SQL Server 2014 on both Publisher & Subscriber. Publisher & Subscriber are across the internet. Replication is Transactional Replication Error messages: The process could not connect to FTP...
View ArticleReplication compatibility between minor MySQL versions
I have a dedicated server running MySQL 5.7, installed using MySQL's Yum repository. Yum always installs the latest version, which is MySQL 5.7.11 at the time of this writing. I want to replicate this...
View ArticleUsing non-replicated read/write databases on a MySQL slave server
I have a MySQL slave server that has two databases being replicated from a master. What I'd like to do is add a third database that I will exclude from replication and use as a read/write database....
View ArticleMySQL Replication issues on server placed in different continents
I am running 2 cpanel servers with MySQL Replication set on them, one in france the other in US. Running a database hungary site. Replication was setup to load balance as well as for failover reason...
View Articlebulk update vs row wise update
I have to update multiple rows (> 100k) satisfying a particular criterion in production environment. Since this query takes much time, it comes in slow query. someone told me that instead of making...
View ArticleI want a cached in-memory dataset replicated across servers
The way memcached works across multiple servers is that it distributes the data across the memcached instances running on all the servers. The client determines which memcached instance to connect to...
View ArticleHow to delete replication objects from db restored from subscriber backup
The db I use for development was restored from a merge replication subscriber. I would like to drop the replication indexes and constraints, and drop the rowguid column. When I execute the following...
View ArticleMongoDB to MySQL Replication Automatically
i have Mongodb server and mysql server. i want to use mongodb for "write" and mysql for "read". so i am looking for some tool or some process by which we can tranfer mongodb to mysql server on regular...
View Articlepassive replication in distributed systems
In a passive replication distributed system "How the Group would know if the Primary Server has failed” and “How would another (Backup) server know to take up the role of the new Primary or the client...
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