@James Bartlett Welcome to Microsoft Q&A forums and thank you for your interest in Azure services.
RediSearch, RedisBloom, and RedisTimeSeries are the modules currently supported on Azure cache for Redis.
We have a collaboration with RedisLabs to support more modules in future.
Please put in a feature request on our UserVoice site. The product team actively reviews requests from customers and scopes them for release in future versions.
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