CSDN daily coming! To the day we offer the freshest technology dry!
Author: programmer Herd
In web development, server needs to accept and process the request, it will allocate a thread for a request to be processed. If you are, then create a new thread for each request is very simple to implement, but there is a problem:
the number of concurrent requests if very large, but each thread execution time is very short, which would frequently creating and destroying threads, so a to will greatly reduce the efficiency of the system. Time and consume server spent on creating a new thread and destroying threads for each request possible system resources than the actual processing time and resources more user requests.
Is there a way to make after executing a task not to be destroyed, but can continue to perform other tasks it?
This is the purpose of the thread pool. Thread Pool provides a solution for the problem of lack of resources and overhead thread life cycle. Through the multiple tasks reuse threads, thread creation overhead is amortized on a number of tasks.
Click here to read the full text
Author: the Java knowledge Church
To chat services, database transaction inevitable to mention the four characteristics of
atomic (Atomic)
Consistency (Consistency)
isolation (Isolation)
persistent (Durability)
only talk today isolation, the other is better understood, it is recommended to see recommended reading explain about the transaction.
Click here to read the full text
Android engineer Interview Guide
Author: xiangzhihong8
ADVANCED separate warranty to the traditional peak period for the change ⼯ "⾦ nine silver ten", under Internet ⽹ winter, seize the opportunity to look at particularly important, especially now that mobile developers have a serious saturation. Android ⼯ that as engineers we should go from what ⽅ ⾯ ready for it? For example, they are not familiar with either the skills to write on your resume, to review what knowledge Android components, brush title destination time there algorithm Use, you probably will consider these issues carefully before ⾯ again.
Under ⾯ I combine my experience and understanding of the self-body, to help you sort out the contents on to record the next resume, ⾯ try and algorithms ⽅ ⾯ need to be prepared to share some of my ⼀ Center Weighted get experience, so that you can get in the winter manufacturers Offer (ps: This article does not explain too much Android interview questions, but some of the soft skills analysis Android interview from a macro point of view, to see if the face questions can refer to: the history of the most complete Android interview questions Collection).
Click here to read the full text
Author: passerby Java
Before and after the contents of the entire family of maven is dependent, if no prior contact with maven, advice from the first article looks, this tail has a complete line of connected maven.
If you, as the company's core development, intends to use maven to build the project framework, the content of this article is that you must master.
Usually we in the development of the system, there will be a development environment, test environment, online environment, each environment configuration file may have been different, such as: configuration, configuring a static database of resources and so on, so we want to build tools can adapt to different working environment to build, can be flexible, and simple enough. Maven as a good build tool, which has done enough good, very good to adapt to different environments of building work, this paper explains how the flexible handling of a maven build various working environments, ado, on dry goods.
Click here to read the full text
Quality Bowen recommended
If your articles meet the following requirements, we welcome contributions, pull you into the CSDN Bowen recommended group, add little sister micro-channel operation: 172 984 955 Note: Bowen recommended!
1. There are some technical guidance of senior technical article
2. explain the basics of point
3 of the latest hot information technology
4. job interviews, career advanced, life sentiment
recommended format: Article Title article addresses + + CSDN recommended language (a two sentences set forth)
Recommended reading:
