event-driven

Async processing of requests in Java webapp

☆樱花仙子☆ 提交于 2021-02-18 19:19:09
问题 I need to write a web application which receives a lot of HTTP requests and takes a long time (30s to 2min) to process each request (in turn making other network requests) before returning a response. Because there would be a lot of requests coming in and those connections are held open I'm thinking of going down an event driven route, which leads me to think Netty is appropriate. If each request takes a long time to process, is that going to block netty's processing? Or can I receive a

Async processing of requests in Java webapp

久未见 提交于 2021-02-18 19:19:07
问题 I need to write a web application which receives a lot of HTTP requests and takes a long time (30s to 2min) to process each request (in turn making other network requests) before returning a response. Because there would be a lot of requests coming in and those connections are held open I'm thinking of going down an event driven route, which leads me to think Netty is appropriate. If each request takes a long time to process, is that going to block netty's processing? Or can I receive a

Async processing of requests in Java webapp

梦想的初衷 提交于 2021-02-18 19:18:06
问题 I need to write a web application which receives a lot of HTTP requests and takes a long time (30s to 2min) to process each request (in turn making other network requests) before returning a response. Because there would be a lot of requests coming in and those connections are held open I'm thinking of going down an event driven route, which leads me to think Netty is appropriate. If each request takes a long time to process, is that going to block netty's processing? Or can I receive a

Event-driven approach in React?

泄露秘密 提交于 2020-07-18 11:48:28
问题 The bounty expires in 2 days . Answers to this question are eligible for a +150 reputation bounty. bravemaster wants to draw more attention to this question: I've already found a solution with EventEmitter, but I have a few questions here: - Is using EventEmitter with React (or React Native) considered to be a good practice? - I'm seeking event-driven approach in React. I'm happy with my solution now but can I achieve the same thing with React hooks? I'd like to "fire an event" in one

Event-driven Model in C with Sockets

一曲冷凌霜 提交于 2020-07-04 05:46:51
问题 I am really interested in event-driven programming in C especially with sockets so I am going to dedicate some time doing my researches. Let's assume that I want to build a program with much File and Network I/O like a client/server app, basically, the first question is what is the philosophy behind this model. While in normal programming I would spawn new processes, how come a single process can actually serve many other requests. For example, there are some web-servers which can handle

Event-driven Model in C with Sockets

眉间皱痕 提交于 2020-07-04 05:46:28
问题 I am really interested in event-driven programming in C especially with sockets so I am going to dedicate some time doing my researches. Let's assume that I want to build a program with much File and Network I/O like a client/server app, basically, the first question is what is the philosophy behind this model. While in normal programming I would spawn new processes, how come a single process can actually serve many other requests. For example, there are some web-servers which can handle

Python Turtle mainloop() usage

人盡茶涼 提交于 2020-05-31 07:11:39
问题 I have the following code from an online tutorial to learn event-based programming by making a stop light that changes state when the mouse is clicked. Here is the entirety of my code: import turtle turtle.setup(400,500) wn = turtle.Screen() wn.title("Tess becomes a traffic light!") wn.bgcolor("lightgreen") tess = turtle.Turtle() def draw_housing(): tess.pensize(3) tess.color("black","darkgrey") tess.begin_fill() tess.forward(80) tess.left(90) tess.forward(200) tess.circle(40, 180) tess

Event-driven simulation class

折月煮酒 提交于 2020-01-22 12:56:09
问题 I am working through some of the exercises in The C++ Programming Language by Bjarne Stroustrup. I am confused by problem 11 at the end of Chapter 12: (*5) Design and implement a library for writing event-driven simulations. Hint: <task.h>. ... An object of class task should be able to save its state and to have that state restored so that it can operate as a coroutine. Specific tasks can be defined as objects of classes derived from task. The program to be executed by a task might be defined

How to handle transaction in event driven architecture?

*爱你&永不变心* 提交于 2020-01-14 05:21:12
问题 I'm currently playing with DDD & CQRS, and I moved forward a legacy application. Let's say I have an Article entity, on which I can cast votes. When a Vote is casted on an Article, I want to increment or decrement a counter accordingly to the value of the vote. This counter is part of my Query model and thus I don't think it fits the Domain Model, for such reasons, I decided to write a CastArticleVoteService in which I put the business logic about a vote, and I dispatch an Event to be handle

What is the correct sequence for bliting surfaces to the screen in pygame?

不打扰是莪最后的温柔 提交于 2020-01-05 15:43:30
问题 I am creating a simple mp3 player and my first task was to create a simple button that a user could press. I created a class called Button which handled this behavior and detects if a user has clicked it and then changes color. I am now trying to have a default text that the button displays and another string (pres_string) which will be displayed if the button is being pressed. The only problem is my background surface seems to be in the wrong place and is drawing over any changes I have made