Bitbucket guardrails

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Background

We’re committed to supporting the needs of our largest customers, and this includes continually improving the performance and scalability of our products. The amount of data in your instance can be a factor in performance and stability problems. As your instance grows, so does your risk of performance degradation over time. Often this is a gradual degradation and can go unnoticed until you reach a point where it has a significant impact on your team.

In the table below, we’ve described the performance and stability impacts that we’ve observed and suggested some actions you can take to reduce your risk. The guardrails are based on real-world experiences with some of our largest customers, but won’t necessarily be representative of every organization’s experience.

Ways you can reduce the risk of experiencing serious performance and stability problems may include:

  • application changes, such as upgrading to a newer application version to get the benefit of performance improvements, or changing the way users are managed.

  • infrastructure changes, such as increasing memory, CPU, or running a cluster or mirrors.

  • data cleanup activities to reduce your footprint, such as archiving or breaking up monolith sites.

It’s important to note that these aren’t hard limits, and some of your product instances may already exceed these thresholds. There are a number of factors, including the interplay between different data types, and site load, which will influence whether you experience the potential impacts listed below, and to what degree. As with any type of risk, it’s essential to identify the risk and make a plan, so you can prioritize those actions that will help you reduce the probability of future performance problems.

Definition

Product Guardrails are data type recommendations designed to help you identify potential risks and aid you making decisions about next steps in your instance optimization journey.

Bitbucket guardrails

The following guardrails are provided to help you identify and mitigate scale risks, and make decisions about cleaning up your instance.

LDAP users and groups

Content type

Total number of users and groups synchronized between LDAP and Bitbucket

Guardrail

  • 70000 users

  • 20000 groups

How to find this number

It may not be very straightforward to find this number, particularly if you have nested groups. If you’re not able to get this number from your user directory, you could try the workaround described in How do I find which users count against my Bitbucket license

Risks

We've observed these problems when operating above this guardrail:

  • Full sync takes a very long time.

  • Potential for high CPU and memory consumption when identifying group memberships during permission checks.

We’ve also observed that instances with a large number of groups and/or complex nested groups, often have a very complicated permission structure, which can also impact performance.

Mitigation options

Last modified on Nov 8, 2022

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