Metheo ea ho sebetsa le zmq ho python, ho theha senotlolo se bonolo / lebenkele la boleng

Selelekela

Ha re shebeng mohlala oa senotlolo se bonolo / polokelo ea boleng, joalo ka memcache. E entsoe ka mokhoa o bonolo - data e bolokiloe mohopolong, ka sebopeho sa hashmap. Li fumaneha ka sokete ea tcp. Ho Python, hashmap ke taelo e tloaelehileng. Bakeng sa phihlello re tla sebelisa zeromq.

phetoho

Ho kenya sephutheloana sena ho debian/ubuntu, kena feela ka har'a console
sudo apt-get install libzmq-dev
sudo pip install zmq

khoutu

Ha re ngole sehlopha ho sebetsa le seva sa rona:
Mofuta oa sokete ea zmq e sebelisitsoeng ke REQ(KOPO, kopo), re romella kopo ebe re emela karabo.
Ho boloka le ho fetisetsa mofuta ofe kapa ofe oa data holim'a marang-rang, re sebelisa mochine o tloaelehileng oa pickle. Mosebetsi "protocol" ke palo ea litekanyetso tse tharo: (taelo, senotlolo, data)

import zmq
import pickle

class SuperCacher:
    def __init__(self):
        context = zmq.Context()
        self.socket = context.socket(zmq.REQ)
        self.socket.connect('tcp://127.0.0.1:43000')

    def get(self, key):
        self.socket.send(pickle.dumps(('get', key, None)))
        return pickle.loads(self.socket.recv())

    def set(self, key, data):
        self.socket.send(pickle.dumps(('set', key, data)))
        return self.socket.recv() == b'ok'

Sebelisa

cache = SuperCacher ()
cache.set('key', 'value')
cache.get('senotlolo')

Joalo ka mosebetsi oa sekolo o etsetsoang hae, ntlafatsa ts'ebetsong ka ho eketsa bokhoni ba ho hlakisa aterese / boema-kepe ha u theha mohlala oa sehlopha.

Joale ha re ngoleng seva ka boeona.
Lekhetlong lena ho sebelisoa socket REP(REPly, response) - re emetse kopo, re romela karabo. Re fetisa kopo mme re araba ka 'ok' tabeng ea ho ngola, kapa ka data / Ha ho letho tabeng ea ho bala.

import pickle
import json
import zmq

def run_daemon():
    memory = {}

    context = zmq.Context()
    socket = context.socket(zmq.REP)
    socket.bind('tcp://127.0.0.1:43000')

    while True:
        try:
            command, key, data = pickle.loads(socket.recv())
            if command == 'set':
                memory[key] = data
                socket.send(b'ok')
            elif command == 'get':
                result = memory.get(key, None)
                socket.send(pickle.dumps(result))
        except Exception as e:
            print(e)

if __name__ == '__main__':
    run_daemon()

Ho leka ntho e 'ngoe le e' ngoe hammoho, re qala seva ka taelo
python daemon.py

Ho tab e latelang, qala python ka mokhoa o kopanetsoeng.

>>> from lib import SuperCacher
>>> cache=SuperCacher()
>>> cache.set('key', 'value')
True
>>> cache.get('key')
'value'

Oho mohlolo, oa sebetsa! Joale o ka ngola ka mokhoa o bolokehileng ts'ebetsong ea hau "ntlafatso ea polokelo ea boleng ba bohlokoa o sebelisa zmq protocol"

Source: www.habr.com