Migrating to Azure Managed Redis: a guide to the Cache for Redis retirement

Microsoft is retiring Cache for Redis but this is not a routine service change. This article explains what is changing, why Azure Managed Redis is different and how to turn a forced migration into a technical improvement rather than a rushed compliance exercise.  

Microsoft is quietly reworking a piece of infrastructure that underpins a huge number of Azure-hosted applications. If your application runs on Azure, there’s a good chance Redis is already part of your digital estate, even if it isn’t something you interact with directly. 

Who this affects 

This change is relevant to a wider set of teams than many organisations initially expect. 

It affects teams running Azure Cache for Redis directly, including product, platform and delivery teams responsible for performance critical applications. 

It also applies to organisations using Redis more indirectly, where the cache layer sits behind a CMS, ecommerce platform, API layer or integration service and is not part of day today development work. 

Finally, it is relevant to teams self hosting Redis on virtual machines, Kubernetes or onprem infrastructure who are already planning a move to Azure and want to avoid carrying unnecessary platform complexity forward. 

What is being retired?

Microsoft is retiring the existing Azure Cache for Redis service in favour of Azure Managed Redis. The timelines are clear:  

And yes, there is a slight chance you might get confused by the naming of the services. You’re not alone! It’s very much a “same but different” situation. Thankfully, while the names sound almost identical, the migration path itself is far clearer than the naming conventions suggest.  

Why this transition is worth doing properly  

Azure Managed Redis is not just a compliance exercise. It brings tangible improvements that are difficult or expensive to replicate in self managed or legacy cache setups:  

Migration is not one size fits all  

The right migration approach depends on how critical Redis is to your application and how much downtime you can tolerate. In practice, there are several proven paths:  

For some systems, Redis is ephemeral and forgiving. For others, it sits on the critical path for user experience. Treating both the same is where migrations go wrong. 

Moving from outside Azure 

This change is also relevant if you are running Redis outside Azure. Teams migrating from Redis OSS on virtual machines, Kubernetes clusters, onprem infrastructure or other cloud providers can move directly into Azure Managed Redis.  

With the right sequencing, this can be done with minimal disruption and no user visible downtime. The migration does not need to be a big bang rewrite, and it does not require freezing product development while the platform team catches up.  

 The real opportunity 

Migrating from Azure Cache for Redis to Azure Managed Redis may feel like switching between two nearly identical names, but the upgrade delivers real, tangible value. You get stronger security, higher performance, enterprise grade features, and migration approaches that can support zero downtime cutovers, even if you are moving from entirely different cache platforms. 

And for customers who chose to self-host Redis to lower costs but have since spent months wrestling with maintenance, patching, clustering, failover setups and on call alerts, this may be the perfect opportunity to reassess. A managed solution can often cost less than the operational overhead teams are carrying today. Azure Managed Redis gives you higher reliability while significantly reducing the need for firefighting. 

The biggest mistake we see is leaving this until the retirement date forces action. That turns a strategic improvement into a rushed compliance task.  

Handled well, this migration is a chance to:  

It is also a natural moment to sanity check whether Redis is being used in the right places and whether configuration decisions made years ago still hold.  

How ClerksWell helps  

At ClerksWell, we work with teams who look beyond lift and shift migrations. We help clients understand how Redis is actually used in their applications, choose the right migration strategy and implement it safely.  

That includes architectural review, migration planning, hands on delivery and post migration optimisation. Whether you are already on Azure or planning a broader cloud move, we focus on reducing risk and avoiding unnecessary rework.  

If you are running Azure Cache for Redis, or you are self hosting Redis and weighing up whether a managed service makes sense, now is the right time to talk.