[redis data structure] Quickly understand the five redis data structures

redis is an advanced key:value storage system where value supports five data types: 1. strings 2. lists of strings 3. String sets 4. Ordered string sets 5. hashes There are a few points to remind you about key: 1. Keys should not be too long, try not to exceed 1024 bytes, which not only consumes memory, but also redu ...

Posted by Skawn on Wed, 08 May 2019 18:48:04 +0200

Fusion of Deep Learning Batch Task Processing Scheduler and kubernetes Default Scheduler

Three-step installation of kubernetes cluster What is a batch task? In deep learning, there are many tasks of multi-machine and multi-card, that is to say, colleagues will have multiple pods, but these pods belong to the same task. So there's a problem. A task starts with 100 pods, each pod needs a card, a total of 100 GPU cards, while there ar ...

Posted by jrobles on Wed, 08 May 2019 14:45:03 +0200

pygame Learning Notes Add a Wizard: Tank Moving and Rotating

Content of this article Use of Elves Use of Rect Class Realize the movement and rotation of a tank Effect demonstration Add a static tank We already know how to create a game window, set up background pictures, and let the game program respond to keyboards and mice. Then we need to add an elf to the game. Elves are a co ...

Posted by darkfreaks on Wed, 08 May 2019 13:15:03 +0200

Public Approaches to Python Foundation

Common methods: Lists, tuples, dictionaries and strings can be used together. Python built-in functions Listing of built-in functions function describe Remarks len(item) Calculate the number of elements in the container del(item) Delete variables del has two methods max(item) Returns the maximum value of the element in the container I ...

Posted by flashbot on Wed, 08 May 2019 11:30:03 +0200

Java 8 Actual Warfare - Book Notes Chapter 1 (02)

From Method to Lambda Then the last Predicate, let's go ahead and see if we continue to simplify the code. It's useful to pass methods as values, but it's a bit annoying if there are a lot of things like isHeavyApple and isGreenApple that might define a bunch of methods only once or twice. To solve this problem, Java 8 introduces a new notation ...

Posted by Richter on Wed, 08 May 2019 07:25:04 +0200

Customizing Streaming Layout of ViewGroup Exercises

Customize the ViewGroup, write your own View inherited from the ViewGroup, and then rewrite its onMeasure and onLayout methods. The onMeasure measurement phase consists of three steps Loop call the measure method of the child view, measure the width of the child view and save it Determine your own width and height by the width ...

Posted by koencalliauw on Wed, 08 May 2019 01:25:03 +0200

LVN and Its Implementation on Linux

Reference material: LVM Details - Junma Jinlong - Blog Garden How to reduce the size of an LVM partition formatted with xfs filesystem on CentOS7? Brother Junma's blog will go a little deeper, and he is based on ext filesystem to demonstrate expansion and scaling, while I use xfs filesystem. Basic concepts Traditional disk partitioning ...

Posted by rakhi on Tue, 07 May 2019 20:15:04 +0200

Studying “ Huaxiao ” Should it be used or not?

How to use data mining "flower choke" in the end should not be used? Based on Monte Carlo principle: If all the expenditure in that month is paid by the flower, when the arrears of the flower in that month are greater than the expendable income in that month, it will "eat dirt". _Budget design 120 months ...

Posted by Matt Kindig on Tue, 07 May 2019 03:45:04 +0200

Redis 7000w+ keys && 16G memory 100% repair experience

cause We always use redis of Aliyun. We are not a high concurrent application. We mainly use redis as distributed locks and a small amount of caches. It hardly needs maintenance. Yesterday afternoon, we suddenly received an alarm email. On-line redis memory is used 100% and instantaneous nerve tension sensation is confirmed by console.This is a ...

Posted by jim_de_bo on Mon, 06 May 2019 15:00:04 +0200

HDU 1811 Rank of Tetris

Topic link: http://acm.hdu.edu.cn/showproblem.php?pid=1811 Title: Given a digraph of n points, tell you the relationship of m (a,b,c)(a,b,c)(a,b,c). A, C denotes node number, B belongs to'>','<','=', in one of the three types,'>'denotes a rank higher than c, less than C rank higher than a', ='indicates that the rank ...

Posted by m!tCh on Mon, 06 May 2019 09:55:04 +0200