downstream promotions

multi-step operation required to shorten the access level. No purpose: 1. See what sales activities (special + buy + discount) The three major sites in the page close to the top of the center to open up the activity display plate (as shown in 4), in the Carousel mode of the current Web site is ongoing sales campaign to promote. In addition, there is also a combination of group buying, limited buying, special promotions and other activiti

First, Gatewayfilter factoriesA route filter allows you to modify an incoming HTTP request or an outgoing HTTP response in some way. Path filters are scoped to a specific path. Spring Cloud Gateway contains many built-in gatewayfilter factories.1.1. Request HeaderSpring: Cloud: Gateway: routes: ID: add_request_header_route uri:http ://example.org Filters: -Addrequestheader=x-request-foo, BarName and value, which adds the X-request-foo:bar header to the

memory fails when the release operation is called?Considering that the Netty memory pool itself is not likely to be a bug, first analyze the way the business is used: The allocation of memory is done in the business code, because the use of the business thread pool to do I/O operations and the isolation of business operations, in fact, memory is allocated in the business threads; The memory release operation is performed in outbound, according to the threading model of Netty 3,

1. Basic Introduction The basic principle and design of the upstream module of Nginx can be referenced by clicking on the Open link. In fact it is a special handler module, the SET function of various xx_proxy instructions, will set the Content_handler of the location, such as Xx_memcached_module ngx_http_memcached_ Handler (), Xx_proxy_module Ngx_http_proxy_handler (). You can simply read the code and find that they are almost 1. First create a upstream structure, simple initialization; 2. Mou

?In fact Coordinatedbolt for the business is not completely non-intrusive, to use the features provided by Coordinatedbolt, you have to ensure that each of your bolts sent each tuple's first field is request-id , then the so-called "done" It means that the current bolt is done with the current "Request-id" work to be done. This request-id DRPC represents a DRPC request in the inside, and in transactional topology represents a batch.The principle of Coordinatedbolt is this: For the user in t

), one optical line terminal (OLT), and one or more optical splitters (see figure 1 ). In the downstream direction, the signal sent by the OLT is broadcast to all ONU. In the uplink direction, TDMA multi-access technology is used to form a TDM information stream to be transmitted to the OLT. 802.3ah modified the Ethernet frame format, redefined the Preamble part, and added the timestamp and LLID of the Logical Link identifier ). LLID identifies each O

, responsible for communication with uplink device. The default VLAN ID of the upstream port must be configured as the VLAN ID of Isolate-user-vlan, otherwise the port cannot forward messages from the secondary VLAN.L downlink Port: A port connected to the user, responsible for communication with the terminal. The default VLAN ID of the downstream port must be configured as the VLAN ID of the secondary VLAN, otherwise the port cannot forward messages

)In fact, introduced from the 802.11e Txop,block ack,802.11n introduced in the rifs, frame aggregation, 802.11AC introduced Mu-mimo (PS: The protocol is only the AP downlink can use Mu-mimo, upstream is not included), These techniques will result in an AP's burst (burst) downstream transmission efficiency higher than the upstream access efficiency.Therefore, from the point of view of energy-saving mode, in the APSD, the first node, then sub-line trans

Php exclusive or decryption! Write a decryption method. please help me! Region = maid zi mahiy° skúj I have iúúúzúi have I Ú úi maš yäcúi have ij shizhúi yangúiúúiúiúiúiúiúiúiúiúiúiúiúiúiúiúiúiúi úi iúiúiúiúiúiúiúiúiúiúiúiúiúiúiúiúiúiúiúiúi úi iúiúiúiúiúiúiúiúiúiúiúiúiúiúiúiúiúiúiúi The above is the content in the encrypted file wininfo_QL730_2016019.ffl ~~. Encryption rules: (1) all the content of the next-pass FTP file is encrypted and stored. data encryption method: each byte is exclusive o

Maximum stream: dinic or sapMinimum fee maximum flow: spfa + augmented (the cost value is relatively discrete) or zkw (the cost value is concentrated)The maximum upstream and downstream streams with a source sink: New s', T'. (I, j, L, R) indicates that I has an edge with a lower bound of L and R between J, split each such edge into (s ', J, 0, L), (I, T', 0, L), (I, j, 0, r-l), add the edge (t, s, 0, max), find the maximum stream from s' to t', and t

window is reopened and a round of "waiting" to determine when the past window is closed. There has been a similar attempt on Spark: Building Big Data operational Intelligence platform with Apache spark-eric Carr (guavus) Multi-stream Merge problem A Kafka partition is a stream, and multiple partition of a Kafka topic are multiple independent streams (offset grows independently of each other). Multiple Kafka topic are clearly multiple independent streams. Streaming statistics often requires mer

firewall used in the campus is an old device that can limit the number of connections per IP address. However, the bandwidth management function is weak. It does not support VLAN-based bandwidth restriction. The bandwidth restriction policy can only be deployed on core switches. The core switch is Cisco 3560G, and the G0/24 is connected to 5-7F, G0/25 ~ through the optical fiber transceiver ~ G0/28 (optical port) are connected to l ~ 4F, all set to Trunk, GO/1 to connect to the firewall. Implem

applications provided by the developer, the developer can choose whether the developer pays for the text message and voice. Operators should try to change the business model, learn how to provide APIs to developers, how to attract developers, and how to meet consumer needs, so as to change the operator's (bad) impression on developers. Related links: My industry ecosystem chain and miscellaneous articles It seems that we have been discussing the Three Gorges over the past few days. from anoth

Microsoft calls data stream technology a pipe (Pipeline) Technology, data flow components can also be called pipeline components. Data can be visually viewed as a flow of water flowing in the pipeline. Each data flow component receives the data delivered by the upstream component, processes the data, and then delivers the data to the downstream component. Component metadata You can right-click a component and select"Show advanced Editor"To view

Which of the following is the best 4G technology? Clarify the relationship between FDD and TDD (1) 1. Technical aspects: they are all born with a mother-in-law. The technical differences between FDD and TDD are actually very small. The main difference lies in the adoption of different duplex modes. FDD and TDD are two different duplex modes. FDD is used to receive and send messages on two separated symmetric frequency channels. It uses protective frequencies to separate the receiving and sendi

SSIS Engine implements the inner join and outer join functions in SQL statements using the Merge Join transformation and Lookup transformation. Any data flow that flows through it is loaded into the memory data buffer, and the amount of data the data buffer can hold determines the performance of the transformation component. The Lookup transformation has an input, a reference table (or cache table, lookup table), and multiple outputs. For each data row in the input, if the corresponding key valu

CollectorsThe class contains many common aggregation operations, such as accumulating into a collection, string concatenation, shrinking, and other summary calculations, and creating a summary table (through groupingBy() ).Built-in collectors Collecting Device Behavior toList() Collects elements into one List . toSet() Collects elements into one Set . toCollection(Supplier Collects elements into a specific type C

)}}module.exports= ToreadableWhen actually used, new ToReadable(iterator) a readable stream is returned, downstream of which the data in the iterator can be streamed.Const ITERATOR =function(limit) {return{Next:function () { if(limit--) { return{done:false, Value:limit +math.random ()}} return{done:true } } }}(1e10) Const readable=Newtoreadable (iterator)//listen for the ' data ' event and get one data at a timeReadable.on (' data ', d

Io.netty.channel.AbstractChannel.AbstractUnsafe.close (Channelpromise) to close the connection release handle resource. Refer to the relevant code:Niobyteunsafe.read method public void Read () {... boolean close = false; try {... int localreadamount = doreadbytes (BYTEBUF); if (localreadamount Traffic shapingGenerally large-scale systems are composed of multiple modules, in the deployment of different modules may be deployed on different machines, such as our project,

1. What is Netty?Nature: A jar package from JBossObjective: To rapidly develop high-performance, high-reliability network server and client programsPros: Provides asynchronous, event-driven network application frameworks and toolsPopular saying: A so-so deal with the socket2, Netty's asynchronous event-driven model mainly involves the following core conceptsChannel: Represents a tunnel associated with a socketchannelpipeline: Pipeline, a channel has a channelpipeline,channelpipeline maintains a