Tornado(二)异步web

2019-11-08 02:52:54

字体：大中小

来源：转载

供稿：网友

异步web请求

测试工具

Siege utility

从同步开始

#coding=utf-8import tornado.httpserverimport tornado.ioloopimport tornado.optionsimport tornado.webimport tornado.httpclientfrom tornado.options import define, optionsdefine("port", default=8000, help="run on the given port", type=int)#接受命令行形式的一些参数class IndexHandler(tornado.web.RequestHandler): def get(self): client = tornado.httpclient.HTTPClient() response = client.fetch("http://www.baidu.com") # 同步的相当于request self.write(response.body)if __name__ == "__main__": tornado.options.parse_command_line() #处理命令行 app = tornado.web.application(handlers=[(r"/", IndexHandler)]) #实例化application http_server = tornado.httpserver.HTTPServer(app) http_server.listen(options.port) tornado.ioloop.IOLoop.instance().start()

同步测试结果

Transactions: 114 hitsAvailability: 100.00 %Elapsed time: 9.99 secsData transferred: 2.58 MBResponse time: 0.60 secsTransaction rate: 11.41 trans/secThroughput: 0.26 MB/secConcurrency: 6.80Successful transactions: 114Failed transactions: 0Longest transaction: 4.67Shortest transaction: 0.01

基础异步调用

class IndexHandler(tornado.web.RequestHandler): @tornado.web.asynchronous def get(self): client = tornado.httpclient.AsyncHTTPClient() client.fetch("http://www.baidu.com", callback=self.on_response) def on_response(self, response): self.write(response.body) self.finish()

异步测试结果

Transactions: 771 hitsAvailability: 99.87 %Elapsed time: 9.60 secsData transferred: 17.54 MBResponse time: 0.08 secsTransaction rate: 80.31 trans/secThroughput: 1.83 MB/secConcurrency: 6.60Successful transactions: 771Failed transactions: 1Longest transaction: 0.92Shortest transaction: 0.01

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