# 日志的收集

  • filebeat

# IOPS

# 日志所影响的CPU及内存

# class / extends

function Animal (name) {
  this.name = name
}

Animal.prototype.hello = () => {
  console.log('hello')
}

function Dog (name, say) {
  Animal.call(this, name)
  this.say = say
}

Dog.prototype = Object.create(Animal.prototype)

Reflect.defineProperty(Dog.prototype, "constructor", {
  value: Dog,
  enumerable: false, // 不可枚举
  writable: true
})
class Animal {
  constructor (name) {
    this.name = name
  }

  hello () {
    console.log('hello')
  }
}

class Dog extends Animal {
  constructor (name, say) {
    super(name)
    this.say = say
  }
}
Last Updated: 2/18/2021, 1:38:17 PM