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How Big is Too Big? Problems with Scale at T-Mobile

Cloud Foundry
Cloud Engineer

Over the last three years, T-Mobile has leaned in heavily on Cloud Foundry and the boost it brought to developer productivity. As the platform popularity "hockey-sticked," so did problems with operating large foundations.

Through it all, we struggled to find answers to two important questions:

  • 1. How big is too big for a foundation?

  • 2. How many foundations is too many?

Without clear answers, we stumbled into the limit for both for our environment. Running entirely on premise, hardware constraints underpinned most of the problems faced, as well as the possible solutions. We'll walk through some of the issues that came up in our larger foundations and what we did about them.