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System Limits

In order to ensure consistent performance, Flagsmith has the following limitations.

Entity Counts​

  • 400 Features per Project
  • 100 Segments per Project
  • 100 Segment Overrides per Environment
  • 100 Segment Rules Conditions

Entity Data Elements​

  • Maximum size of a Flag String Value is 20,000 bytes
  • Maximum size of an Identity Trait Value is 2,000 bytes

Segment Data Elements​

  • Maximum size of a Segment Rule Value is 1,000 bytes

Overriding Limits​

SaaS​

Please contact us if you want to override the current system limits.

Self Hosted​

You can modify the system limits on a per-Project basis. These limits are defined in the database against the Project. The easiest way to modify them is with the Django admin interface.

Traffic Limits​

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When we say rate limit in this document we mean to-the-second limits on API usage.

When we say plan limit in this document we mean the month to month usage limit defined as part of your plan.

SDK Limits​

Requests made by our SDKs are not rate limited, by design; we can't predict what sort of profile your traffic will look like.

There are scenarios where we will block your API calls, based on the plan limit you are signed up to, which are detailed below. You will be notified and given warning in the event that we are going to stop serving your flags on account of you going over these plan limits.

Free Plan Limits​

If you are on our Free Plan, we will stop answering requests from our API if you go over your Free Plan limit. We will send you a warning email 7 days before we block your requests, to give you time to upgrade your account.

This block is cleared 30 days after the warning email was first sent, or when you upgrade to a paid plan.

If you go over your plan limit by a factor of 2 or less​

If you go over your paid plan limit we will email you and give you a 30 day grace period. We will then charge you an overage for that calendar month (or the contracted overage rate if specified in your Enterprise agreement). Please refer to our Pricing Page for overage pricing.

If you go over your plan limit by a factor of more than 2​

We will bill you for all overage above your plan in the current calendar month. You will be charged for the overage at the end of your billing period.

Admin API Rate Limit​

Requests made to Admin API endpoints (i.e., non-SDK endpoints) are subject to a default rate limit of 500 requests per minute.

If you are self-hosting, you have the flexibility to modify this limit by adjusting the value of the environment variable USER_THROTTLE_RATE.