Main Searchex workflow

results <- query <- index <- catalog <- params

This workflow establishes a dependency chain, with higher level steps depending on the outputs of lower level steps. Each step generates an intermediate output which can be cached to minimize re-execution of compute-intensive steps. The processing middleware is based on Shake.

An LRU Cache is used, with auto-expiration of old keys. Cache keys are digests of the content produced at each step of the build chain.

Note that all of these functions take a cfg_snip argument. The cfg_snip is a wildcard string which matches against the repo/collection name. For example, if the repo/collection name is sample/genesis, any of these cfg_snips would match (sample/genesis, genesis, sampgeni, geni)

All of these functions return simple Elixir terms with no output formatting. See Searchex.Render for a list of functions that perform special handling on command output.