项目中应用Redis+Php的场景,项目redisphp场景
项目中应用Redis+Php的场景,项目redisphp场景
前言
一些案例中有的同学说为什么不可以用string类型,string类型完全可以实现呀
我建议你看下我的专栏文章《Redis高级用法》,里面介绍了用hash类型的好处
商品维度计数
对商品喜欢数,评论数,鉴定数,浏览数进行计数
说起电商,肯定离不开商品,而附带商品有各种计数(喜欢数,评论数,鉴定数,浏览数,etc)
Redis的命令都是原子性的,你可以轻松地利用INCR,DECR等命令来计数。
采用Redis 的类型: Hash. 如果你对redis数据类型不太熟悉,可以参考
http://redis.io/topics/data-types-intro
为product定义个key product:,为每种数值定义hashkey, 譬如喜欢数like_num
$redis->hSet('product:123', 'like_num ', 5); // 添加 id为123的商品 like_num 为5 $redis->hIncrBy('product:123', 'like_num ', 1); // 添加 id为123的商品like_num +1 $redis->hGetAll('product:123'); // 获取id为123的商品相关信息 array('like_num '=> 1)
用户维度计数
对用户动态数、关注数、粉丝数、喜欢商品数、发帖数等计数
用户维度计数同商品维度计数都采用 Hash. 为User定义个key 为 user:
为每种数值定义hashkey, 譬如关注数follow
$redis->hSet('user:100000', 'follow ', 5); // 添加uid为10000的用户follow 为5 $redis->hIncrBy('user:100000', 'follow ', 1); // 更新uid为10000的用户follow +1 $redis->hGetAll('user:100000'); // 获取uid为10000的用户 array('like_num '=> 1)
存储社交关系
譬如将用戶的好友/粉丝/关注,可以存在一个sorted set中,score可以是timestamp
默认集合按照score递增排序
这样求两个人的共同好友的操作,可能就只需要用求交集命令即可
$redis->zAdd('user:1000:follow', 1463557212, '1001'); #uid为1000用户关注uid为1001 , score值设定时间戳1463557212 $redis->zAdd('user:1000:follow', 1463557333, '1002'); $redis->zAdd('user:2000:follow', 1463577568, '1001'); $redis->zAdd('user:2000:follow', 1463896964, '1003'); #uid为2000用户关注1001和1003用户 , score值设定时间戳 $redis->zInter('com_fllow:1000:2000', array('user:1000:follow', 'user:2000:follow')); #对集合'user:1000:follow'和'user:2000:follow'取交集'com_fllow:1000:2000' #获得共同关注的uid $redis->zRange('com_fllow:1000:2000',0,-1); // 获取全部集合元素 #array('10001','10002')
用作缓存代替memcached
应用于商品列表,评论列表,@提示列表
相对memcached 简单的key-value存储来说,redis众多的数据结构(list,set,sorted set,hash,
etc)
可以更方便cache各种业务数据,性能也不亚于memcached。
NOTE: RPUSH pagewviews.user: EXPIRE pagewviews.user: 60 //注意要update timeout
反spam系统
应用系统评论、发布商品、论坛发贴的spam控制
作为一个电商网站被各种spam攻击是少不免(垃圾评论、发布垃圾商品、广告、刷自家商品排名等)
针对这些spam制定一系列anti-spam规则,其中有些规则可以利用redis做实时分析
譬如:1分钟评论不得超过2次、5分钟评论少于5次等(更多机制/规则需要结合drools )
常规sorted set将最近一天用户操作记录起来
(为什么不全部记录?节省memory,全部操作会记录到log,后续利用hadoop进行更全面分析统计)
#获取5秒内操作记录 $res = $redis->zRangeByScore('user:1000:comment', time() - 5, time()); #判断5秒内不能评论 if (!$res) { $redis->zAdd('user:1000:comment', time(), '评论内容'); } else { echo '5秒之内不能评论'; } #5秒内评论不得超过2次 if($redis->zRangeByScore('user:1000:comment',time()-5 ,time())==1) echo '5秒之内不能评论2次'; #5秒内评论不得少于2次 if(count($redis->zRangeByScore('user:1000:comment',time()-5 ,time()))<2) echo '5秒之内不能评论2次';
用户Timeline/Feeds
应用于关注的人、主题、品牌及专栏
redis在这边主要当作cache使用
$redis->zAdd('user:2000:feed:topic', time(), '13'); //score 为timestamp uid为2000的用户关注tid为13的topic $redis->expire('user:2000:feed:topic',24*60*60); #关注有效期为24小时 # ttl 30天之内按秒数计算 30天之外以timestamp为准
最新列表&排行榜
用于记录用户刚刚喜欢的商品最新列表or排行榜 等业务场景
商品最新列表-sorted set结构呈现
$redis->zAdd('user:1000:product:like', time(), '3002'); $redis->zAdd('user:1000:product:like', time(), '3001'); $redis->zAdd('user:1000:product:like', time(), '3004'); $redis->zAdd('user:1000:product:like', time(), '3003'); $redis->zRange('user:1000:product:like', 0, -1,true); #默认喜欢时间升序序排列 # Array( [3002] => 1463565179 [3001] => 1463565189 [3004] => 1463565199 [3003] => 1463565209 ) $redis->zRevRange('user:1000:product:like', 0, -1,true); #以喜欢时间降序排列 # Array ( [3003] => 1463565424 [3004] => 1463565414 [3001] => 1463565404 [3002] => 1463565394 )
排行榜-list数据结构呈现
$redis->lPush('user:1000:product:like', '3002'); $redis->lPush('user:1000:product:like', '3001'); $redis->lPush('user:1000:product:like', '3004'); $redis->lPush('user:1000:product:like', '3003'); $redis->lRange('user:1000:product:like', 0, -1); Array ( [0] => 3003 [1] => 3004 [2] => 3001 [3] => 3002 )
消息通知
采用Hash结构对消息通知业务场景计数
$redis->hSet('user:1000:message:notice', 'system', 1); #设置1条未读系统消息 $redis->hIncrBy('user:1000:message:notice', 'system', 1); #未读系统消息+1 $redis->hSet('user:1000:message:notice', 'comment', 1); #设置1条未读评论 $redis->hIncrBy('user:1000:message:notice', 'comment', 1); #未读评论+1 $redis->hGetAll('user:1000:message:notice'); #查看所有消息通知数量 Array ( [system] => 2 [comment] => 2 )
将Redis用作消息队列
采用Redis的List数据结构实现分布式的消息队列

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics



The future of PHP will be achieved by adapting to new technology trends and introducing innovative features: 1) Adapting to cloud computing, containerization and microservice architectures, supporting Docker and Kubernetes; 2) introducing JIT compilers and enumeration types to improve performance and data processing efficiency; 3) Continuously optimize performance and promote best practices.

PHP and Python each have their own advantages, and the choice should be based on project requirements. 1.PHP is suitable for web development, with simple syntax and high execution efficiency. 2. Python is suitable for data science and machine learning, with concise syntax and rich libraries.

PHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.

PHP remains important in modern web development, especially in content management and e-commerce platforms. 1) PHP has a rich ecosystem and strong framework support, such as Laravel and Symfony. 2) Performance optimization can be achieved through OPcache and Nginx. 3) PHP8.0 introduces JIT compiler to improve performance. 4) Cloud-native applications are deployed through Docker and Kubernetes to improve flexibility and scalability.

PHP is a scripting language widely used on the server side, especially suitable for web development. 1.PHP can embed HTML, process HTTP requests and responses, and supports a variety of databases. 2.PHP is used to generate dynamic web content, process form data, access databases, etc., with strong community support and open source resources. 3. PHP is an interpreted language, and the execution process includes lexical analysis, grammatical analysis, compilation and execution. 4.PHP can be combined with MySQL for advanced applications such as user registration systems. 5. When debugging PHP, you can use functions such as error_reporting() and var_dump(). 6. Optimize PHP code to use caching mechanisms, optimize database queries and use built-in functions. 7

The reasons why PHP is the preferred technology stack for many websites include its ease of use, strong community support, and widespread use. 1) Easy to learn and use, suitable for beginners. 2) Have a huge developer community and rich resources. 3) Widely used in WordPress, Drupal and other platforms. 4) Integrate tightly with web servers to simplify development deployment.

PHP is still dynamic and still occupies an important position in the field of modern programming. 1) PHP's simplicity and powerful community support make it widely used in web development; 2) Its flexibility and stability make it outstanding in handling web forms, database operations and file processing; 3) PHP is constantly evolving and optimizing, suitable for beginners and experienced developers.

PHP and Python each have their own advantages and are suitable for different scenarios. 1.PHP is suitable for web development and provides built-in web servers and rich function libraries. 2. Python is suitable for data science and machine learning, with concise syntax and a powerful standard library. When choosing, it should be decided based on project requirements.
