The thing is though, the Elixir feed checker has its own database table that tracks whether it's seen an episode in a feed. And when there's a new episode it sends an API call to WP to insert the new post. The problem is that sometimes the API calls fail! Now what? I'll need to build logging, re-try etc. So I'm thinking of making the feed checker 'stateless' and only using WP with a lot of query caching as the holder of 'state' information about whether an episode has been seen before.
To sum up my experience so far, there's something nice about being able to use the right tech for each task, and separating resources for each service, but the complexity--keeping track of whether a task completed properly--definitely increases.
