subscriber booster

I. Release and subscription mechanismsWhen a client sends a message to a subscriber via the PUBLISH command, we call the client Publisher.When a client uses the SUBSCRIBE or Psubscribe command to receive information, we call the client the Subscriber (Subscriber).To understand the relationship between a decoupled publisher (publisher) and a

ciphers AES-CCM TKIP!Encryption VLAN 102 mode ciphers AES-CCM TKIP!Encryption VLAN 103 mode ciphers AES-CCM TKIP!Encryption VLAN 104 mode ciphers AES-CCM TKIP!Encryption VLAN ciphers AES-CCM TKIP!Encryption VLAN 106 mode ciphers AES-CCM TKIP!Encryption VLAN 107 mode ciphers AES-CCM TKIP!Encryption VLAN 108 mode ciphers AES-CCM TKIP!SSID test_wlan_100!SSID test_wlan_101!SSID test_wlan_102!SSID test_wlan_103!SSID test_wlan_104!SSID test_wlan_105!SSID test_wlan_106!SSID test_wlan_107!SSID test_wla

Rxjava's GitHub homepage, the deployment part has nothing to say ~Https://github.com/ReactiveX/RxJava BasisThe two core Rxjava are observables (observed, event source) and Subscribers (Observer). Observables emits a series of events subscribers handle these events. The event here can be anything you are interested in (touch events, web interface calls return data ...). ） A observable can emit 0 or more events, knowing the end or error. Each event is emitted, its

Engine (including SQL Server Replication), Management Tools. Second, the primary database server (publisher) configuration: 1. Create a new sample database on the primary database server CNBlogsDB1 Cnblogsdemo (note that recovery mode will use the default value full, only this mode can be replicated), and then create a test table, such as: Cnblogstest. 2. Set the folder where snapshots are stored: Before creating a publication, set up the folder where the snapshot is held, and the snapsho

Rxjava is just a Java implementation of Reactivex (reactive Extensions), Reactivex is a responsive extension framework with many implementations, such as Rxandroid, RXJS, Rxswift, Rxruby, and so on. Rx uses a form similar to the observer to achieve a variety of functions, with our general writing code thinking of a greater difference. Initial contact may be difficult to understand, but once you have mastered it, you will feel the strength of it. The principle is to create a observable object to

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risk of data loss (a network or server instability can result in data loss) High resource consumption In Pub/sub, the message Publisher does not need to monopolize a redis link, while the consumer needs to occupy a single redis link, and in Java it is not allowed to separate a thread to handle the consumer. This scenario generally corresponds to these multiple consumers, at this time there is a high resource consumption. For several deficiencies, you can use JMS to implement this functionality

a copy of the publication is called a publisher. Publishers monitor all changes to the article and notify the reseller of these changes.Reseller (distributor)Resellers are both tracking all subscribers and tracking changes for all publishers, while ensuring that any change is known to each Subscriber. The vast majority of changes are traced to the distribution server. Although a reseller can act as a standalone database instance, the distributor typi

Replication), Management Tools.Second, the configuration of the primary database server (publisher):1. Create a new sample database Cnblogsdemo in the primary database server CNBlogsDB1 (Note Recovery mode uses the default value of full, which is the only mode for transactional replication), and then creates a test table, such as Cnblogstest.2. Set the folder where the snapshot is held:Before you create a publication, set up a folder for the snapshot, which will generate a snapshot file in the

Replicated tables in the primary database Table name Description MSreplication_options The table stores metadata that is used internally for replication. This table is stored in the master database. Replicated tables in the msdb database Table name Description Msagentparameterlist The table contains replication agent parameter information that specifies the parameters that can be set for a gi

of the communication content, its structure mainly divides into the message header, the attribute and the message body, and divides into several kinds according to the storage structure difference, later will refer in detail. Message producer: The party that generated the message, in peer-mode, refers to the message sender (sender), which in p/s mode refers to the message publisher (publisher) Message consumer: The party receiving the message, corresponding to the two modes are the mess

distribute data to different locations and distributed to remote or mobile users. Replication consists of publishers, distributors, and subscription servers: Publisher: The source server for the data, maintains the source data, determines what data will be distributed, detects which data has been modified, and submits that information to the Distributor. Distributor: The Distributor is responsible for transferring data from the Publisher to the

The example above explains Eventbus for Android and introduces the basic usage of Eventbus, this article introduces the implementation principle of Eventbus. The implementation of Eventbus is mainly around two functions register and post, respectively, described below.1 Register (Object subscriber)functionRegistering a method with OnEvent beginning in subscriberCode:privatesynchronizedvoidregisterbooleanint priority) { //构造出方法列表 Listfor (Subscri

I often encounter typographical problems in my work. Now I want to resolve the problem in the form of a question and answer, hoping to help you. The answer may not be accurate enough, but it can achieve the goal. The answer may be a bit wordy, but it is also for everyone to understand. Please forgive me for these shortcomings. 1. How to set the header and footer? "View" → "header and footer" will open the edit Toolbar of the header and footer, and switch to the edit header status. You only ne

After reading about the delegation and events, I will send an example to help you remember and help friends who cannot understand the events for the moment. In the following example, we simply implement the connection between the event and the delegate, For delegation, we can think like this: it can be a function pointer in C ++, but in C #, for type security and other factors, delegation came into being. Delegate can treat variables in the same way. For events, the Windows form programming mode

In Android, the open-source framework EventBus3.0 is used to implement communication between Fragment and the fragment open-source framework.1. Overview In the previous blog, I briefly introduced how to implement information interaction between fragment: Interaction Between Fragment and Activity in Android (two implementation methods). we will continue to introduce another EventBus method that can achieve this effect. (Compared with handler, interface callback, and bundle passing parameters, thi

androidschedulers.mainthread () , which specifies that the operation will run on the Android main thread. With these Scheduler , you can use subscribeOn() and observeOn() two methods to control the threads. * subscribeOn() : Specifies the thread subscribe() that occurs, that is, the Observable.OnSubscribe thread that is active. Or an event-generated thread. * observeOn() : Specifies the Subscriber thread that is running. Or a thread called ev

performance, whether the message channel adequately considers error handling, support for message security, and support for message persistence, disaster preparedness (fail over), and clustering. Because the messages passed by the channel are often important business data, once the channel becomes a point of failure or a breach of security, it can have a disastrous impact on the system. In the second part of this article, I will present a practical case to illustrate the architectural factors t

recommended in the message does not comply with the carrier's policy, then s-Cscf rejects the request and sends the SIP error message 488 to the UE. Section 3.11 shows how a media control policy is included in the user description (Profile. · Maintain session timers. Version 5 does not provide a means for stateful proxies to know the session status. Version 6 fixes this vulnerability by introducing session timers. This allows the S-CSCF to detect and release resources that are exhausted by dead

Tips for setting headers and footers in Word documents Category: sea sky I often encounter typographical problems in my work. Now I want to resolve the problem in the form of a question and answer, hoping to help you. The answer may not be accurate enough, but it can achieve the goal. The answer may be a bit wordy, but it is also for everyone to understand. Please forgive me for these shortcomings. 1. How to set the header and footer?"View" → "header and footer" will open the edit Toolbar of the