[EDITED 25 Sept] This change is now LIVE! Please let us know (post below) if you are encountering any issues with Countdown at your end, or have any questions.
[EDITED 1 Sept] Due to some internal changes at our end, we are now unable to go ahead with this on Mon 4th Sept. We are very sorry for any inconvenience this may have caused.
REVISED DATE: if you are a Countdown API user, please note the NEW planned date/time for this change is 11.00am Monday 25th September 2023.
IMPORTANT Alert for Countdown API users
We will shortly be making some changes to how our users access the Countdown API, and your action will be required in order to continue to use this data.
If you are using the Countdown API, please read the information below about the changes and how you can test this in advance.
What are the Countdown API changes and why are they being actioned?
We have recently been experiencing severe load issues with our Countdown API. In order to improve the security and robustness of this feed and better manage demand, we will be moving the Countdown API behind Cloudflare. This should also improve overall performance for users.
We will be enforcing HTTPS with a minimum TLS version of 1.2. Users will need to ensure that the client they use to consume Countdown API feeds is compatible with TLS 1.2 or 1.3 protocol. If you are using an older client, this will no longer be compatible with our Countdown API feed (once we have rolled out the changes), and will need to be upgraded.
When will this change be introduced?
[EDITED 1 Sept] The new planned date/time for this change is: 11.00am Monday 25th September 2023.
What happens next?
Please follow the instructions below to test the new configuration ahead of rollout as soon as possible. If you encounter any issues with using the test domain, please reply to this post below.
How can I access the test?
We have set up a test domain: countdown-cf-test.tfl.gov.uk which has the configuration that will be implemented, and points to the live data. You can use this to test against, to allow you to understand the impact on your systems.
An example call using this domain:
IMPORTANT: Once the changes have been applied to the main countdown domain (countdown.api.tfl.gov.uk), the test domain will be removed.