Replication

Replication Won’t Refresh Your Dev and Pre-Production Environments

It’s almost like the real thing, except it’s totally different. At first glance, SQL Server’s transactional replication seems like it’s useful for moving data around in all sorts of situations: it works in Standard Edition, it’s not synchronous, and you can have multiple subscribers. Why People Want Replication to Test and Pre-Production Environments Setting up…
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Transactional Replication Architecture: Isolating Subscriber Tables

The best part about transactional replication is that it’s flexible. And the worst thing about transactional replication is that it’s flexible. A poor replication configuration will cause you performance pains and increase your risks of development and administrative errors. Here’s one important design principle: isolate your replication subscriber tables from one another, and from non-subscriber tables.…
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You Can’t Kill Transactional Replication

Repli-Roach If SQL Server’s Transactional Replication was an animal, it would be a cockroach. It’s not pretty, but it’s resourceful and strong. Once you get even a small amount of replication in your environment it starts spreading everywhere. And if it gets out of control– well, in that case you’ve got no choice but to…
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Many Masters, One Truth

As businesses grow, many teams start considering scale out database solutions but they’re cautious – they want to know how to keep data up to date in multiple places. In theory, you can use log shipping, mirroring, or AlwaysOn Availability groups. While this answers the literal question, what people really mean is usually very different.…
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Resolving Conflicts in the Database

Anyone who has worked with replication has run into problems caused by conflicting data. I’ve lost enough sleep over replication to know that having an effective plan for conflict resolution is important to keeping replication running and healthy. What Causes Conflicts? There are a few ways that conflicts can show up in a database. In…
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