birchbox subscription

Background:Recently, a publishing subscription always reports a delay at night. Because the copy backup occupies the bandwidth at night and no one uses the subscribed data at night, it has never been viewed, recently, I went up and looked at it and found many problems. The server has 12 GB of memory and 16 CPUs. Troubleshooting steps and solutions:1. view the current large number of pageiolatch_sh wait information, the execution is the distribution o

I. Introduction of the Scene A recent project needs to use the Publish/Subscribe information system to inform the latest real-time messages. After finding out that Redis pub/sub (information system for publish/subscribe) can meet my development needs, and the cost of learning and use is also relatively low. Two. What is Redis pub/sub Data View Everyone is watching my blog at the same time can open the Redis official Redis pub/sub Introduction, feel the English document difficult to read , yo

", "headimgurl": "http://wx.qlogo.cn/mmopen/utpKYf69VAbCRDRlbUsPsdQN38DoibCkrU6SAMCSNx558eTaLVM8PyM6jlEGzOrH67hyZibIZPXu4BK1XNWzSXB3Cs4qpBBg18/0", "subscribe_time": 1375726425, "unionid": "oTBn-jt2RQSHdBoJQYFSdnZo8BBQ "}Iv. Significance of unionid For enterprises with multiple accounts, unionid can help identify whether users under different public accounts are the same person. In this way, the services provided to the user under different accounts can be continuously increased. You can also rem

(); Factory. UserName = "Guest"; Factory. Password = "Guest"; Factory. HostName = "192.168.10.97"; using (var connection = factory. CreateConnection ()) { using (var channel = connection. Createmodel ()) { channel. Basicpublish ("Hello_e", "Hello", NULL, Encoding.UTF8.GetBytes (DateTime.Now.ToString ()));}}} 4. Program Operation effectClick the button, pop up the MessageBox, to prove t

) stringredisserializer.deserialize (channel); System.out.println ("I am sub3, listening to" +topic+ ", I received the message:" +u.getid () + "--" +u.getname ()); }}@Service Public classPub {@Autowired @Resource (name= "Redistemplate") PrivateRedistemplateRT; @AutowiredPrivateGenericjackson2jsonredisserializer Jackson2jsonredisserializer; @AutowiredPrivateJdkserializationredisserializer Jdkserializationredisserializer; Public voidsendMessage (String channel, String message) {Rt.convertandse

I am using the Redis is installed on the native virtual machine, the use of Java connection encountered some errors, summed up the need to change the place as follows:1, redis configuration file by default is bound 127.0.0.1 IP, need to find this line in redis.conf, comment out2, Redis default does not allow non-native Client connection, itself is no password, need to set a login password, connect with a passwordSet password command: Config set Requirepass xxx, after the password settings need t

(Licensenum). Append (Vertime). toString ();String dx = new StringBuilder (need). Append (LL). Append (UserId). toString ();int suf = this.decode (dx);String code = new StringBuilder (need). Append (string.valueof (SUF)).ToString ();return This.change (code);} private int decode (String s) {int i;Char[] AC;Int J;int k;i = 0;AC = S.tochararray ();j = 0;K = Ac.length;while (J i = (* i) + ac[j];j + +;}return Math.Abs (i);} private string Change (string s) {Byte[] ABYTE0;Char[] AC;int i;int k;Int J

' [x] b ' Info:hello world! [x] B ' Info:hello world! One ' [x] b ' Info:hello world! [x] B ' Info:hello world! [x] B ' Info:hello world! [x] B ' Info:hello world! [x] B ' Info:hello world! [x] B ' Info:hello world! [x] B ' Info:hello world! [x] B ' Info:hello world! 19 '　You can see that the message received by two subscribers is the same.The status change for each subscriber does not affect the message received by another subscriber.Third, queue informationOn the Web Administration page, view

::multithreadedspinner spinner (2); Use 2 threadsSpinner.spin (); Spin () won't return until the node has been shutdownUse Multithreadedspinner to indicate that this node has two threads, also available (Boost::thread), and that the desired functionality is finally implemented, but because the for loop is faster and no lock is used, the stop is sent every time, Exiting the For loop is not the same level, so you need to think about it.[1] http://wiki.ros.org/roscpp/Overview/Callbacks%20and%20Spin

Label:Remote subscriptions rely on the Distributed Transaction Coordinator service, which requires access to the server's 135 port and requires that the publisher and the subscriber's MSDTC be opened ( Start-Control Panel-Administrative Tools-Component Services-computers-My Computer-distributed Transaction coordinator-local DTC), check security-local DTC, allow remote clients, allow remote administration, allow inbound, allow to play, do not authenticateSQL SERVER2008

1. As shown in the picture, we will see the red box icon after opening the YY soft, then we click on "Discovery Channel" to enter. 2. When we open the Discovery Channel, we will see a "Activity center" which we click on: 3. In the Activity Center we find the rightmost button with an asterisk icon, as shown in the following illustration: 4. All right, we'll get to the next page and we'll see all our subscriptions. Friendly tips, this is my use of the latest version of YY to see

The main structure is: The Python process publishes messages, and the Java process subscribes to messages.Dependent environment:Python:pip Install RedisJava:jedis1. Python side:pubsub.pyImport Redisclass PubSub (object): def __init__ (self, host, port, db): self.__conn = Redis. Redis (host, port, DB) def publish (self, Channel, msg): self.__conn.publish (channel, msg) return True def subscribe (self, channel): pub = Self.__conn.pubsub () pub.subscribe

1 basicPublish/Subscribe is a message communication pattern. Instead of publishing messages to subscribers, publishers publish to different channels. Subscribers accept messages of the channel they are interested in and do not need to contact the publisher.Sub/pub are both client, and channel is server., the message is sent to the three sub client when the new message is posted to Channel1 via the Publish command.2 commandsSubscribe to a channel on the CLI: Channel1127.0.0.1:6379> SUBSCRIBE chan

Start the subscription and publish Client On the subscription Client Redis 127.0.0.1: 6379> psubscribe share Reading messages... (press Ctrl-C to quit)1) "psubscribe"2) "share" 3) (integer) 1 Indicates that the client subscribes to the share channel 1 indicates that the number of connected subscription channels in the client is 1. Publish the clientTo publish a m

Using the Publish subscription feature of RedisAnother common use of redis is the ability to publish subscriptions. It is very simple and connectionmultiplexer will automatically re-subscribe when the connection fails.Isubscriber sub = Redis. Getsubscriber ();The Getsubscriber method returns an instance of the Isubscriber type. The Publish subscription feature does not have a database concept, and we can pr

Python implements the method of downloading images from the subscription source, This example describes how to download images from a subscription source using Python. Share it with you for your reference. The details are as follows: This code is implemented based on python 3.4, which is different from python2.X.This is an exercise. The data source comes from Netease su