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!`)
)

Does this means that multiples calls to

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 ?

Effect Community•3y ago•

13 replies

ex0ns

Difficulty Understanding Batching in Effect Library

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

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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