server

Sending Objects over Java Socket really slow

由 笑着哭i 提交于 2019-12-08 03:58:20
问题 I can't figure out why my Java Server with Socket and ServerSocket is that slow while sending objects. Here a small ping program to demonstrate my problem. If I run both client and server on the same machine, everything is fine ofc (<1ms ping time). However, if I move the Server to a Linux machine I get a ping time of >500ms (ping via command line to that machine says 20ms). Thanks in advance Server: public static void main(String[] args) { try { ServerSocket serverSocket = new ServerSocket

java: closing client socket resets server socket

由 折月煮酒 提交于 2019-12-08 03:55:08
问题 I have a very simple capitalization Java program. Client sends text read from standard input to server which converts that text into capital letters. Program works well but once client is stopped (NetBeans ide used), server is also reset. Server socket should keep listening for new connection from clients regardless of a client being stopped. public class Client { public static void main(String[] args) throws IOException { try(Socket s=new Socket("localhost",9090)) { while(true) { PrintWriter

How to handle MySQL heavy traffic?

由 六眼飞鱼酱① 提交于 2019-12-08 03:33:06
问题 Having a MySQL site with 90,000 accounts, you need to split traffic into two or three servers, how to do this, the site runs on MySQL. The site has many queries to the database, more Insert than select. How to split this traffic into several servers, and if possible optimize the database (to reduce the number of links)? I will add that I do not want to change the database for this time to better e.g MemSQL because I do not know about it and the current development. In the future I have such

Can someone interpret these apache bench results, is there something that stands out?

由 会有一股神秘感。 提交于 2019-12-08 02:54:09
问题 Below is a apache bench run for 10K requests with 50 concurrent threads. I need help understanding the results, does anything stand out in the results that might be pointing to something blocking and restricting more requests per second? I'm looking at the connection time section, and see 'waiting' and 'processing'. It shows the mean time for waiting is 208, and the mean time to connect is 0 and processing is 208..yet the total is 208. Can someone explain this to me as it doesn't make much

django - run project from PyCharm server not accessible

由 二次信任 提交于 2019-12-08 02:11:45
问题 When I run my django server from PyCharm it is not accessible from the outside world. I read that you can run in the cmd like that, and it works. python manage.py runserver 0.0.0.0:8000 How do I run it to be accessible to the outside world from PyCharm ? I need to run it from there is order to debug. thanks! 回答1: At the upper-right corner (by default) of PyCharm you can edit the configuration for your server: In there specify as host 0.0.0.0 . Don't forget to take care of your firewall/NAT by

Laravel Vue js spa application

由 流过昼夜 提交于 2019-12-08 01:48:59
问题 1). i want to know why people use two servers to make a vuejs SPA with laravel. I think we can use the other way. Make a Route like this Route::get('{any}', function () { return view('index'); })->where('any' , ".*"); and let vue handle the page url.. why people are using 2 servers and then using laravel passport to authenticate when we dont need to do all this to make spa.. 2). Okay now suppose we have our spa readdy using 2 separate servers one for vue and one for laravel . Now i don't know

How to open Android activities based on role of user?

由 China☆狼群 提交于 2019-12-08 01:39:22
问题 I am creating an online based Android app in which there is a listview , which shows notifications from different types of users like ' student ', ' teacher '. When I click a list view item, it should check the role of the user, whether the user is registered as ' teacher ' or a ' student ' and it should open the activity screen based on their role. I'll use intents to open different activities. How do I check the role of the user from server? 回答1: Well, I would like to provide my own answer.

Download a file with cURL

由 时光毁灭记忆、已成空白 提交于 2019-12-08 00:25:35
问题 I am trying to download a file with cURL. I have received an URL where the file is located, but the url makes an redirect before reaching the file. For some reason I always receive the logout page when I access the URL with cURL, but when I enter the URL directly in my browser the file just downloads as it is supposed to. The file that should be downloaded is a RAR file, but instead of the file I get the incorrect login page. This the current code: $ch = curl_init(); curl_setopt($ch, CURLOPT

java: closing client socket resets server socket

由 ≡放荡痞女 提交于 2019-12-08 00:24:25
I have a very simple capitalization Java program. Client sends text read from standard input to server which converts that text into capital letters. Program works well but once client is stopped (NetBeans ide used), server is also reset. Server socket should keep listening for new connection from clients regardless of a client being stopped. public class Client { public static void main(String[] args) throws IOException { try(Socket s=new Socket("localhost",9090)) { while(true) { PrintWriter out=new PrintWriter(s.getOutputStream(),true); BufferedReader rd=new BufferedReader(new

Missing the first characters using boost::asio::streambuf

由 流过昼夜 提交于 2019-12-08 00:01:36
问题 I make an asynchronous chat server in C++ using the boost library. Almost everything works fine. There are two ways for a client to disconnect: by pressing Ctrl + C (killing the client process) by entering "exit". The former is OK. However, the latter has a problem. If a client disconnects with "exit", the next message, sent by another client, appears without the first several characters. After that it's OK. For example: Several clients chat. One of them disconnects with "exit". After that,
订阅 server