13 replies

Difficulty Understanding Batching in Effect Library

After reading the docs (which is a great news btw, that was definitely lacking), I have a lot of trouble to understand how batching can work. In this case http://effect.website/docs/core-concepts/batching-caching#defining-queries and in particular in

const notifyOwner = (todo: Todo) => Effect.flatMap(
  getUserById(todo.ownerId),
  (user) => sendEmailToUser(user.id, `hey ${user.name} you got a todo!`)
)

const notifyOwner = (todo: Todo) => Effect.flatMap(
  getUserById(todo.ownerId),
  (user) => sendEmailToUser(user.id, `hey ${user.name} you got a todo!`)
)

const notifyOwner = (todo: Todo) => Effect.flatMap(
  getUserById(todo.ownerId),
  (user) => sendEmailToUser(user.id, `hey ${user.name} you got a todo!`)
)

const notifyOwner = (todo: Todo) => Effect.flatMap(
  getUserById(todo.ownerId),
  (user) => sendEmailToUser(user.id, `hey ${user.name} you got a todo!`)
)

Does this means that multiples calls to

getUserById

getUserById

getUserById

getUserById are "pooled" together before making the batch request, and then, for each of them, the continuation of the flatmap is applied ? How does this work ?

Difficulty Understanding Batching in Effect Library

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