...還記得第一次使用rocketmq的時(shí)候,需要去控制臺(tái)預(yù)先創(chuàng)建topic,我當(dāng)時(shí)就想為什么要這么設(shè)計(jì),于是我決定擼一波源碼,帶大家從根源上吃透rocketmq topic的創(chuàng)建機(jī)制。 topic在rocketmq的設(shè)計(jì)思想里,是作為同一個(gè)業(yè)務(wù)邏輯消息的組織...
...IP:9092, IP:9092 client = KafkaClient(hosts = host) # 生產(chǎn)者 topicdocu = client.topics[my-topic] producer = topicdocu.get_producer() for i in range(100): print i prod...
... 對(duì)于每個(gè)問(wèn)題抓取 標(biāo)題,關(guān)注人數(shù),回答數(shù)等數(shù)據(jù) zhihuTopicSpider.py # -*- coding: utf-8 -*- import scrapy import os import time import re import json from ..items import zhihuQuestionItem # mode 1:tencent 2:free mo...
...名,相同分組的producer應(yīng)該有相同的發(fā)送消息邏輯 createTopicKey AUTO_CREATE_TOPIC_KEY 自動(dòng)創(chuàng)建topic時(shí),以此默認(rèn)topic為模板創(chuàng)建指定topic defaultTopicQueueNums 4 自動(dòng)創(chuàng)建topic隊(duì)列數(shù)量 sendMsgTimeout 3000 發(fā)送消息的超時(shí)時(shí)間,單位ms compressM...
...承Django的ModelForm類: from django import forms from .models import Topic class TopicForm(forms.ModelForm): class Meta: model = Topic fields = [text] labels = {text: } 最簡(jiǎn)單...
...應(yīng)的通信能力: 組件聲明為訂閱者(Subscriber)并通過(guò)@Topics注解的形式從消息中心訂閱自己感興趣的主題消息,對(duì)應(yīng)的消息會(huì)通過(guò)notify接口告知組件; 組件聲明為發(fā)布者(Publisher),可以通過(guò)Publisher角色注入的publish方法發(fā)...
...bscriptions = {}; var amplify = global.amplify = { publish: function( topic ) { // ... }, subscribe: function( topic, context, callback, priority ) { // ... }, ...
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