Django如何处理同时发送的多个请求？

在Web应用中，服务器可能同时收到多个请求。处理这些请求颇具挑战，尤其是当服务器需要执行API请求、数据库查询等复杂操作时。本文将探讨Django如何处理同时发送的多个请求。

group_name_status = {'name': '', 'status':''}


def tokem_update(access_token):
    try:
        intervalInfo = UserIntervalInfo.objects.first()
        headers = {'Content-Type': 'application/json', 'Accept': 'application/json'}
        data = {'client_id': intervalInfo.client_id,
                'client_secret': intervalInfo.client_secret,
                'grant_type': 'password',
                'username': intervalInfo.user_id,
                'password': intervalInfo.user_password
                }
        response_token = requests.post(user_token, headers=headers, data=json.dumps(data))
        data = response_token.text
        tokens = json.loads(data)
        access_token.access_token = tokens['access_token']
        access_token.token_type = tokens['token_type']
        access_token.expires_in = tokens['expires_in']
        access_token.refresh_token = tokens['refresh_token']
        access_token.save()
        return access_token
    except:
        return False


def nema_status(request):
    if request.method == 'POST':
        try:
            group_id = request.POST.get('group_id')
            access_token = API_ACCESS_TOKEN.objects.first()
            current_datetime = timezone.now()
            difference = int((current_datetime - access_token.updated_at).total_seconds() / 3600)
            if difference > 7:
                access_token = tokem_update(access_token)
                if access_token == False:
                    messages.error(request, "Failed update the access token" )
                else:
                    messages.success(request, 'Successfully updated the access token')
            headers = {
                "Accept": "application/json",
                "Content-Type": "application/json",
                "Authorization": f"Bearer {access_token.access_token}"
            }
            if group_id != '0':
                group_name = Group.objects.get(id=group_id)
                if group_name.object_id:
                    par_group_nemas_status = f"https://rpt.tvilight.io/api/status?type=group&q={group_name.object_id}"
                    response_nema_status = requests.get(par_group_nemas_status, headers=headers)
                    if response_nema_status.status_code == 200:
                        datas = response_nema_status.json()
                        nemas = Nema.objects.filter(group=group_name)
                        for data in datas:
                            for nema in nemas:
                                if nema.object_id == data['object_id']:
                                    Nema_status.objects.create(
                                        status = data['status'],
                                        api_created_at= data['created_at'],
                                        message = data['message'],
                                        object_id=data['object_id'],
                                        object_type= data['object_type'],
                                        session_id= data['session_id'],
                                    )
                                    break
                        messages.success(request, f"{group_name.name} name status added successfully")
                    else:
                        messages.error(request, f"Something went wrong. Try again.")
                else:
                    messages.info(request, 'Group object not found.')
            elif group_id == '0':
                all_group = Group.objects.filter(is_delete=False)
                for group_name in all_group: 
                   
                    if group_name.object_id:
                        par_group_nemas_status = f"https://rpt.tvilight.io/api/status?type=group&q={group_name.object_id}"
                        response_nema_status = requests.get(par_group_nemas_status, headers=headers)
                        global group_name_status
                        group_name_status['name'] = group_name.name
                        group_name_status['status'] = response_nema_status.status_code
                        if response_nema_status.status_code == 200:
                            datas = response_nema_status.json()
                            nemas = Nema.objects.filter(group=group_name)
                            for data in datas:
                                for nema in nemas:
                                    if nema.object_id == data['object_id']:
                                        Nema_status.objects.create(
                                            status = data['status'],
                                            api_created_at= data['created_at'],
                                            message = data['message'],
                                            object_id=data['object_id'],
                                            object_type= data['object_type'],
                                            session_id= data['session_id'],
                                        )
                                        break
                messages.success(request, f"All group name status added successfully")
        except:
            messages.error(request, f"Something went wrong. Try again.")
    else:
        messages.error(request, "Something went wrong. Try again.")
    return redirect('nema:view_nema')


def get_group_name(request):
    global group_name_status
    return JsonResponse(group_name_status, status=200)

同时发起Ajax请求与Django URL请求 #

document.querySelectorAll('.nema-status-group').forEach(item => item.addEventListener('submit', e => {
            for(let i = 0; i < 5000; i++){
                setTimeout(get_table_name, i * 1000)
            }
        })
        );
        function get_table_name(){
            let label = document.querySelector('#lable');
            $.ajax({
                url: "{% url 'nema:group_name_status' %}",
    
                    type: "get",
                    dataType: "json",
                    success : (data) => {
                        if(label.innerHTML != `<b>Group:</b> ${data.name} <b>Status:</b> ${data.status}`){
                            if (data.name != ''){
                                
                                label.classList.add('badge');
                                label.innerHTML = `<b>Group:</b> ${data.name} <b>Status:</b> ${data.status}`;
                                if (data.status == 200){
                                    label.classList.remove('badge-gradient-danger')
                                    label.classList.add('badge-gradient-success');
                                }
                                else{
                                    label.classList.remove('badge-gradient-success');
                                    label.classList.add('badge-gradient-danger');
                                }
                            }
                        }
                    }
            })
        }

内容的提问来源于stack exchange，提问作者Anik Saha