lightspeed restaurant

engaged in Java cannot solve this problem, he said so.Java developers also like to say that this should not be completed by JDK or a framework, but by brave, hardworking, and intelligent users. The following are some of the problems I encountered when developing a Java project, and some of them may be incorrect.If you encounter many problems and cannot discuss them all at a time, you can just list a few questions. 1. "ABC" = "ABC" returns false. Many beginners need to waste a lot of time on

This example is based on some documents on the website about JSP operations on XML, and some personal experiences. The example involves part of the Code on the background management end of an enterprise's internal ordering system, which is mainly used to manage basic restaurant information.The example itself is a B/S structure program running on the TOMCAT4.01 platform. The configuration of TOMCAT is not described here. This section only describes the

If you want to have a Kung Pao Chicken Bowl:synchronization blocking: You go to the restaurant to order, and then wait there, but also shouted: OK! synchronous non-blocking: When you finish the meal at the restaurant, walk the dog.But slipped for a moment, and went back to the restaurant and shouted: "Well, no!" Asynchronous blocking: When you walk the dog, you g

DescriptionKefa decided to celebrate he first big salary by going to the restaurant. He lives by an unusual park. The park is a rooted tree consisting of n vertices with the root at vertex 1. Vertex 1 also contains Kefa ' s house. Unfortunaely for our hero, the park also contains cats. Kefa have already found out what is the vertices with cats in them. The leaf vertices of the park contain restaurants. Kefa wants to choose a

The achievements of R-tree in fields such as databases are very significant. It solves the problem of searching in high-dimensional space very well. Take an example of the R-tree that can be solved in the real world: find all the restaurants within 20 miles. What would you do if there were no R-trees? In general, we will divide the coordinates of the restaurant (x, y) into two fields in the database, one field records the longitude, and the other fiel

the number of visitors is enough to make up for the reduced profits. To get rid of the dilemma of "busy but not making money", the only way is to develop in the order of "increasing the customer price → increasing the number of customers. It helps you skip the product lifecycle, avoid price competition, reduce costs, and increase profits. Increase the customer unit price → increase the number of customers The so-called "increase customer unit price" means to increase the average purchase a

[Curriculum Design]scrum team division and Clear Mission 1.0----Multi-Fish orderFirst, the development backgroundMulti-Fish point meal System is a set of more systematic food service products for the restaurant, from the customer into the restaurant ordering meal to the end of the meal to the final checkout, the need for comprehensive, efficient information services to assist, which effectively improve the

restaurant, every table guests, there is a waiter dedicated to serve you, from you to the restaurant to checkout, so the benefits of the way is good service quality, one-to-one service, VIP Ah, but the shortcomings are also very obvious, high cost, if the restaurant business, at the same time to 100 table guests, it will require 100 The boss had to die of hearta

up, synchronous and asynchronous is relative to the application and the core of the interaction, synchronization needs to proactively ask, and asynchronous when the kernel at the time of the Io event to notify the application, and blocking and non-blocking is only the system calls the system when the function of the implementation of the way.If you want to have a Kung Pao Chicken bowl:Synchronization blocking: You go to the restaurant to order, and t

will generate a request and obtain the result if the result exists. Of course, there are some unhandled boundary problems. The exception is not handled. When the API fails or an unrecognized JSON is returned, the generator throws an exception. Despite the incomplete processing, we can still use this code to obtain the sorting of our restaurant in the keyword "coffee" search results. # pass a number to start at as the second argument if you don't want

say: One day I went to a restaurant, because the restaurant door has a pool of water, resulting in slippery road, I accidentally fell, so I came to the restaurant manager, held accountable, the restaurant manager told me that this is because I walk the wrong posture, So slipped and fell, nothing to do with the

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In the high-performance IO system design, there are several noun concepts that often confuse us. Specific as follows:1 What is synchronization?2 What is async?3 What is blocking?4 What is non-blocking?5 What is sync blocking?6 What is synchronous non-blocking?7 What is asynchronous blocking?8 What is asynchronous non-blocking?Let's start with an example of life:If you want to have a Kung Pao Chicken bowl:Synchronization blocking: You go to the restaurant