JarCastingcall-limit
Limit the number of simultaneous executions of a async function.
const fs = require('fs')
const limit = require('call-limit')
const limitedStat = limit(fs.stat, 5)
Or with promise returning functions:
const fs = Bluebird.promisifyAll(require('fs'))
const limit = require('call-limit')
const limitedStat = limit.promise(fs.statAsync, 5)
USAGE:
Given that:
const limit = require('call-limit')
limit(func, maxRunning) → limitedFunc
The returned function will execute up to maxRunning calls of func at once. Beyond that they get queued and called when the previous call completes.
func must accept a callback as the final argument and must call it when it completes, or call-limit won't know to dequeue the next thing to run.
By contrast, callers to limitedFunc do NOT have to pass in a callback, but if they do they'll be called when func calls its callback.
limit.promise(func, maxRunning) → limitedFunc
The returned function will execute up to maxRunning calls of func at once. Beyond that they get queued and called when the previous call completes.
func must return a promise.
limitedFunc will return a promise that resolves with the promise returned from the call to func.
limit.method(class, methodName, maxRunning)
This is sugar for:
class.prototype.methodName = limit(class.prototype.methodName, maxRunning)
limit.method(object, methodName, maxRunning)
This is sugar for:
object.methodName = limit(object.methodName, maxRunning)
For example limit.promise.method(fs, 'stat', 5) is the same as fs.stat = limit.promise(fs.stat, 5).
limit.promise.method(class, methodName, maxRunning)
This is sugar for:
class.prototype.methodName = limit.promise(class.prototype.methodName, maxRunning)
limit.promise.method(object, methodName, maxRunning)
This is sugar for:
object.methodName = limit.promise(object.methodName, maxRunning)
For example limit.promise.method(fs, 'statAsync', 5) is the same as fs.statAsync = limit.promise(fs.statAsync, 5).