Managed database or host it yourself? The difference explained.

When you deploy an application on Ploi Cloud, one of the first decisions you will face is: where should my database live? You have two options — add a database service directly inside your application, or provision a managed database that runs independently. Both work, but they serve different purposes. Let us break it down.

Option 1: a database inside your application

When you add a database service (MySQL, PostgreSQL, or MongoDB) to your application, it runs as a container alongside your app inside the same environment. Think of it as your database living in the same house as your application code.

This is the simplest way to get started. You click a button, the database spins up, and your application can connect to it immediately — no external configuration needed. Everything stays within one deployment, which keeps things straightforward.

When an application database makes sense

This approach works well for a number of scenarios:

• Side projects and prototypes — you want to ship fast without worrying about infrastructure details.

• Development and staging environments — you need a database that mirrors production but does not need to be bulletproof.

• Small applications with low traffic — your data fits comfortably in a single container and you do not expect heavy load.

• Cost-sensitive setups — since the database shares resources with your application, there is no additional service to pay for separately.

Option 2: a managed database

A managed database runs on dedicated infrastructure, completely separate from your application. Ploi Cloud handles the provisioning, maintenance, backups, and updates for you. You get a connection string, plug it into your app, and the database takes care of itself.

Managed databases are available for MySQL, PostgreSQL, and Redis — the engines most applications rely on.

What you get with a managed database

Managed databases come with features that are difficult (or tedious) to set up yourself:

• Automatic backups — your data is backed up on a regular schedule without you lifting a finger.

• High availability — the database runs on infrastructure designed to stay online, even if something goes wrong under the hood.

• Dedicated resources — your database gets its own CPU and memory, so it is not affected by what your application is doing.

• Scaling — you can upgrade the plan when your data or traffic grows, without migrating anything manually.

• Security updates — patches and version upgrades are handled for you.

• Multiple users and databases — create separate database users and logical databases to organize access properly.

When a managed database makes sense

Go with a managed database when:

• You are running a production application — your users depend on it being fast and reliable.

• Your data matters — if losing data would be a serious problem, automatic backups and dedicated infrastructure give you peace of mind.

• You need to scale independently — your app and database have different resource needs, and you want to scale them separately.

• Multiple applications share the same database — a managed database can serve several apps at once using separate logical databases and user accounts.

• You do not want to be a database administrator — let the platform handle maintenance, security patches, and uptime so you can focus on building.

A side-by-side comparison

Here is a quick overview to help you decide:

Can you start with one and switch later?

Absolutely. A common pattern is to start with a database service inside your application while you are building and testing, then move to a managed database once you are ready to go to production. Since both options support MySQL and PostgreSQL, migrating your data is a straightforward export and import.

Our recommendation

If you are prototyping, learning, or running a non-critical app — the built-in database service is perfect. It is fast to set up and keeps everything in one place.

Once your application serves real users, handles important data, or needs to scale — a managed database is the way to go. The automatic backups, dedicated resources, and zero-maintenance approach will save you time and headaches in the long run.

Both options are available directly from your Ploi Cloud dashboard. Pick the one that fits your current stage, and switch when the time is right.