pubsub

publishing/subscription function, let's take a look at several structures related to this. struct redisServer { --- /* Pubsub */ dict *pubsub_channels;/* Map channels to list of subscribed clients */ list *pubsub_patterns;/* A list of pubsub_patterns */ ---}typedef struct redisClient { --- dict *pubsub_channels; /* channels a client is interested in (SUBSCRIBE) */ list *pubsub_patterns; /* patterns a client is interested in (SUBSCRIB

', 'execute _ command', 'exists', 'expire ', 'expireat', 'flushall', 'flushdb', 'From _ url ', 'get', 'getbit ', 'getrange', 'getset', 'hdel', 'hexists', 'hget', 'hgetall', 'hincrby', 'hincrbyfloat ', 'hkeys', 'hlen', 'hmet ', 'hmset', 'hset', 'hsetnx', 'hvals', 'inc', 'encrbyfloat', 'info ', 'keys ', 'lastsave', 'lindex', 'linsert ', 'llen', 'lock', 'lpop', 'lptu', 'lpushhx', 'lrange ', 'lrem ', 'Lset', 'ltrim', 'mget', 'Move ', 'mset', 'msetnx', 'object', 'parse _ response', 'persist ', 'pexpi

Publish/Subscribe (PUB/SUB) is a message pattern with two participants: Publisher and Subscriber. The publisher posts a message to a channel that the subscriber binds to, and when a message is posted to the channel, the Subscriber receives the notification. Publishers and Subscribers are fully decoupled, sharing only one channel name with each other.This mode improves the serviceability of the application and makes the application easy to extend.Simple design idea: The design Channel records the

-log-slower-than 10000 Slowlog-max-len 128 Hash-max-ziplist-entries 512 Hash-max-ziplist-value 64 List-max-ziplist-entries 512 List-max-ziplist-value 64 Set-max-intset-entries 512 Zset-max-ziplist-entries 128 Zset-max-ziplist-value 64 Activerehashing yes Client-output-buffer-limit normal 0 0 0 Client-output-buffer-limit slave 256 mb 64 mb 60 Client-output-buffer-limit pubsub 32 mb 8 mb 60 Hz 10 Aof-rewrite-incremental-fsync yes Simple nginx Configurat

to retrieve the tasks in the queue and execute them?Write a php loop to retrieve tasks in the queue? If there is no task, the query is directly cyclically performed? Is there a better solution? Reply content: When developing a microblog-like system and using the push mode, a user needs to save a microblog in the "inbox" of all its fans. if the number of followers is large, the processing process is time-consuming. I want to implement this logic using asynchronous queues. The idea is as follows

In swoole, I wrote the Mail information to be sent to the redis queue. how can I read redis and execute the sent mail? do I need to use contab to set the timing or use swoole's timer? Or in other ways, I write the Mail information to be sent to the redis queue in swoole. how can I read redis and execute the sent mail? I need to set the timing using contab, or use swoole's timer? Or other methods Reply content: In swoole, I wrote the Mail information to be sent to the redis queue. how can I r

/redis/redis-server-6581.logdbfilename Dump-6581.rdbTcp-backlog 511bind 127.0.0.1unixsocketperm 777timeout 0tcp-keepalive 0loglevel NoticeDatabases 16save "" Stop-writes-on-bgsave-error yesrdbcompression YesDir/var/lib/redisSlave-serve-stale-data YesSlave-read-only YesRepl-diskless-sync NoRepl-diskless-sync-delay 5repl-disable-tcp-nodelay NoSlave-priority 100appendonly NoAppendfilename "Appendonly.aof" Appendfsync everysecNo-appendfsync-on-rewrite noauto-aof-rewrite-percentage 100auto-aof-rewrit

" 3) (integer) 1Now, we re-open a Redis client and then publish two messages on the same channel Redischat, and the Subscriber can receive the message.Redis 127.0.0.1:6379> PUBLISH redischat "Redis is a great Caching technique" (integer) 1redis 127.0.0.1:6379> PUBLISH Redischat "Learn Redis by runoob.com" (integer) # Subscriber will display the following message 1) "Message" 2) "Redischat" 3) "Redis is a great caching te Chnique "1)" "Message" 2) "Redischat" 3) "Learn Redis by runoob.com"Redis P

*) Channel->ptr,Sdslen (Channel->ptr), 0)) {Addreply (Pat->client,shared.mbulkhdr[4]);Addreply (Pat->client,shared.pmessagebulk);Addreplybulk (Pat->client,pat->pattern); Print the pattern that is matchedAddreplybulk (Pat->client,channel); Print Channel nameAddreplybulk (Pat->client,message); Print messagesreceivers++; Update the number of recipients}}Decrrefcount (channel); Releasing The Used channel}return receivers; Returns the number of recipients} Implementation of UNSUBSCRIBE and Pu

{/** * ADD subscribers * @param observer */public void att Ach (Observer Observer); /** * DELETE subscribers * @param observer */public void Detach (Observer observer); /** * Notifies subscribers of UPDATE messages */public void notify (String message); /* Specific viewer/target object/subject (Subject) */public class Subscriptionsubject implements Subject {//Store subscription to public number of users private List* * Publish/Subscribe mode * *1. Definition/ResolutionThe subscriber regis

-full-coverage No #如果某一些key space is not covered by any node in the cluster, the most common is a node hangs, the cluster will stop accepting writes Auto-aof-rewrite-percentage 80-100 #部署在同一机器的redis实例, rub Auto-aof-rewrite, prevent the instant fork all Redis process do rewrite, occupy a lot of memory Slowlog-log-slower-than 10000 Slowlog-max-len 128 Notify-keyspace-events "" Hash-max-ziplist-entries 512 Hash-max-ziplist-value 64 List-max-ziplist-entries 512 List-max-ziplist-v

64MBLua-time-limit 5000Slowlog-log-slower-than 10000Slowlog-max-len 128Hash-max-ziplist-entries 512Hash-max-ziplist-value 64List-max-ziplist-entries 512List-max-ziplist-value 64Set-max-intset-entries 512Zset-max-ziplist-entries 128Zset-max-ziplist-value 64activerehashing YesClient-output-buffer-limit Normal 0 0 0Client-output-buffer-limit slave 256MB 64MB 60Client-output-buffer-limit pubsub 32MB 8MB 60Hz 10System[[Email protected] ~] #vi/etc/security

#GENERALDaemonize NoTcp-backlog 511Timeout 0Tcp-keepalive 0LogLevel NoticeDatabases 16Dir/var/redis/dataSlave-serve-stale-data Yes#slave只读Slave-read-only Yes#not Use defaultRepl-disable-tcp-nodelay YesSlave-priority 100#打开aof持久化AppendOnly Yes#每秒一次aof写Appendfsync everysecThe new write operation is fsync when the #关闭在aof rewriteNo-appendfsync-on-rewrite YesAuto-aof-rewrite-min-size 64MBLua-time-limit 5000#打开redis集群cluster-enabled Yes#节点互连超时的阀值Cluster-node-timeout 15000Cluster-migration-barrier 1Sl

512List-max-ziplist-value 64Set-max-intset-entries 512Zset-max-ziplist-entries 128Zset-max-ziplist-value 64activerehashing YesClient-output-buffer-limit Normal 0 0 0Client-output-buffer-limit slave 256MB 64MB 60Client-output-buffer-limit pubsub 32MB 8MB 60 /opt/redis/bin/redis-server/opt/redis/etc/redis.conf RedislivePython writes, parses query statements and has web-interface monitoring tools Note: Long running has an impact on Redis per

target, and the Publish/subscribe pattern is unified by the dispatch center, so there is a dependency between the Subscriber and the publisher of the Observer pattern, and the release/ The subscription mode does not.2. Two modes can be used for loose coupling, improved code management and potential reuse.AppendixObserver Pattern Implementation code (JavaScript version):Observer list function observerlist () {this.observerlist = [];} ObserverList.prototype.add = function (obj) {return this.obser

)############################# Advanced CONFIG ######################### #有关哈希数据结构的配置项hash-max-ziplist-entries 512hash-max-ziplist-value 64# #有关列表数据结构的配置项list-max-ziplist-entries 512list-max-ziplist-value 64## Configuration items for collection data Structures set-max-intset-entries 512# #有关有序集合数据结构的配置项zset-max-ziplist-entries 128zset-max-ziplist-value 64## Configuration items for Hyperloglog byte limit hll-sparse-max-bytes 3000# #关于是否需要再哈希的配置项activerehashing yes##About the control of client out

Most blog search engines provide reverse link query methods, but the commands are different and not easy to use. So talk digger provides such a service that can query reverse link data of major engines at a time. The blog search engines queried by talk digger include Bloglines, Technorati, blogpulse, pubsub, feedster, and blogdigger. In addition, it also includes reverse link data of MSN and Google. With this, we can fully understand the popularity

what the bloggers refer. PingPing to notify other websites that your blog has been updated. Ping-o-matic (www.pingomatic.com) is a mechanism that helps you update servers (such as Technorati) to major blogs and notify your blog of the updated mechanism. Post)A single piece of data with unlimited content length can be images and texts on a blog. ReferrerLike someone introducing you to a doctor in real life, referrer is the person who directs you to a specific blog. It is important to know w

-rewrite NoAuto-aof-rewrite-percentage 100Auto-aof-rewrite-min-size 64MBaof-load-truncated YesLua-time-limit 5000Slowlog-log-slower-than 10000Slowlog-max-len 128Latency-monitor-threshold 0Notify-keyspace-events ""Hash-max-ziplist-entries 512Hash-max-ziplist-value 64List-max-ziplist-entries 512List-max-ziplist-value 64Set-max-intset-entries 512Zset-max-ziplist-entries 128Zset-max-ziplist-value 64Hll-sparse-max-bytes 3000activerehashing YesClient-output-buffer-limit Normal 0 0 0Client-output-buffe

Previous data binding: Model-to-view is a simple introduction to binding from model to view, and we want more than that, and we want the data model to be affected when the view changes. The most applied scenario should be the form, so that changing the view changes the data to be submitted so that our workload can be greatly reduced. event, or eventWhen a user is working in a form, the event is naturally triggered by a keyboard or mouse, and we capture these events and manipulate the model