netty s application

msg) throws exception{Bytebuf buf = (bytebuf) msg;Gets the number of buffer readable bytesbyte[] req = new byte[buf.readablebytes ()];Buf.readbytes (req);String BODY = new String (req, "UTF-8");System.out.println ("The time server receive order:" + body);String currenttimestring = "QUERY time ORDER". Equalsignorecase (body), New Java.util.Date (System.currenttimemillis ()). ToString (): "Bad ORDER";Reply messageBytebuf resp = Unpooled.copiedbuffer (Currenttimestring.getbytes ());Ctx.write (RESP

Netty (1) -- Netty Entry Program, netty Entry Program Reprinted please indicate the source: http://www.cnblogs.com/Joanna-Yan/p/7447618.html If you are interested, you can first understand the comparison and selection of four I/O types. The main content includes: Setting up the Netty Development Environment Server

not find the root cause of the memory leak, helpless began to view the Netty memory pool allocator Pooledbytebufallocator doc and source implementation, found that the memory pool is actually based on thread context implementation, the relevant code is as follows:Final threadlocalThis means that the application and release of memory must be in the same thread context and not across threads. It is not the s

clearly defined environmental conditions, can also effectively determine the responsibility of software failure in the user side or provider;3) mandated functions: Software reliability is also related to the mandated tasks and functions. Due to the different tasks to be completed, the software will run a different section, the sub-modules will be called differently (that is, the program path selection), and its reliability may be different. Therefore, to accurately measure the reliability of a

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, acc

measure the reliability of a software system must first clarify its tasks and functions.1.3. Reliability of NettyFirst of all, we want to analyze its reliability from the main use of Netty, there are three kinds of mainstream usage of Netty at present:1) constructs the basic communication component of RPC call, and provides the ability of remote service invocation across nodes;2) NIO communication framewor

-white list filtering, handshake, and other operations; After step 2 is complete, the business layer's link is formally established, the Socketchannel is removed from the reactor thread's multiplexer on the main thread pool and re-registered on the thread of the sub thread pool to handle I/O read and write operations. 2. Netty Threading Model 2.1. Netty Threading Model ClassificationIn fact, the th

and data. Events can be described as a very common method, because you can customize a handler to convert an Object into a byte [] or convert a byte [] to an Object; you can also define a handler to handle thrown exceptions. You will often write a class that implements ChannelInboundHandler. ChannelInboundHandler is used to receive messages. When there is a message, you can decide how to handle it. When the program needs to return a message, it can write/flush data in ChannelInboundHandler. It

framework is not part of the Netty micro-kernel, it is essential to extend the codec framework through Channelhandler customization, even though it is in the micro-kernel perspective.Below we discuss this topic from several angles in detail, first of all, look at the logical architecture diagram of Netty:Figure 2-1 Netty Logical architecture DiagramInbound messages that are read from the network need to be

This chapter includes:1) Architecture design and technical point of Netty2) Channel,eventloop and Channelfuture3) Channelhandler and Channelpipeline4) BootstrapIn the first chapter, we describe the history of Java's development in high-performance network programming and the accumulation of the technical foundation of the network, which provides a good atmosphere for the analysis of Netty's core components and building blocks.In the second chapter, we expanded our scope of discussion, we built o

in the following points:1) substantial and correct use of volatile;2) wide use of CAS and atomic classes;3) Use of thread-safe containers;4) Improve concurrency performance through read-write locks.If you want to know the details of Netty high-efficiency concurrency programming, you can read the "Multi-threaded concurrent programming application analysis in Netty