Development problems usually encountered
Development Question 1: Broken Pipe
Problem Description:
Caused by: java.io.IOException: Broken pipe
at sun.nio.ch.FileDispatcherImpl.write0(Native Method)
at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:47)
at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:93)
at sun.nio.ch.IOUtil.write(IOUtil.java:65)
at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:471)
at org.apache.tomcat.util.net.NioChannel.write(NioChannel.java:134)
at org.apache.tomcat.util.net.NioBlockingSelector.write(NioBlockingSelector.java:101)
at org.apache.tomcat.util.net.NioSelectorPool.write(NioSelectorPool.java:157)
at org.apache.tomcat.util.net.NioEndpoint$NioSocketWrapper.doWrite(NioEndpoint.java:1225)
at org.apache.tomcat.util.net.SocketWrapperBase.doWrite(SocketWrapperBase.java:743)
at org.apache.tomcat.util.net.SocketWrapperBase.flushBlocking(SocketWrapperBase.java:696)
at org.apache.tomcat.util.net.SocketWrapperBase.flush(SocketWrapperBase.java:686)
at org.apache.coyote.http11.Http11OutputBuffer$SocketOutputBuffer.flush(Http11OutputBuffer.java:553)
at org.apache.coyote.http11.filters.ChunkedOutputFilter.flush(ChunkedOutputFilter.java:157)
at org.apache.coyote.http11.Http11OutputBuffer.flush(Http11OutputBuffer.java:216)
at org.apache.coyote.http11.Http11Processor.flush(Http11Processor.java:1149)
at org.apache.coyote.AbstractProcessor.action(AbstractProcessor.java:394)
at org.apache.coyote.Response.action(Response.java:209)
at org.apache.catalina.connector.OutputBuffer.doFlush(OutputBuffer.java:294)
Caused by: java.io.IOException: Connection reset by peer
at sun.nio.ch.FileDispatcherImpl.write0(Native Method)
at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:47)
at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:93)
at sun.nio.ch.IOUtil.write(IOUtil.java:65)
at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:471)
at org.apache.tomcat.util.net.NioChannel.write(NioChannel.java:134)
at org.apache.tomcat.util.net.NioBlockingSelector.write(NioBlockingSelector.java:101)
at org.apache.tomcat.util.net.NioSelectorPool.write(NioSelectorPool.java:157)
at org.apache.tomcat.util.net.NioEndpoint$NioSocketWrapper.doWrite(NioEndpoint.java:1225)
at org.apache.tomcat.util.net.SocketWrapperBase.doWrite(SocketWrapperBase.java:743)
at org.apache.tomcat.util.net.SocketWrapperBase.flushBlocking(SocketWrapperBase.java:696)
at org.apache.tomcat.util.net.SocketWrapperBase.flush(SocketWrapperBase.java:686)
at org.apache.coyote.http11.Http11OutputBuffer$SocketOutputBuffer.flush(Http11OutputBuffer.java:553)
at org.apache.coyote.http11.filters.ChunkedOutputFilter.flush(ChunkedOutputFilter.java:157)
at org.apache.coyote.http11.Http11OutputBuffer.flush(Http11OutputBuffer.java:216)
at org.apache.coyote.http11.Http11Processor.flush(Http11Processor.java:1149)
problem causes:
This exception is that the client reads timeout and closed the connection. At this time, when the server writes data to the client's disconnected connection, a broken pipe exception occurs! The situation where the problem occurs is the batch listing operation of 100 products, and the front-end connection has been disconnected before the back-end interface has finished responding.
Solution:
I used the method of opening multi-threading for processing. Since the response timed out, open a few more threads for processing. It depends on the situation. Don't abuse the thread! ! !
Development problem two
Problem Description:
problem causes:
Solution:
As a back-end engineer, you must have an accumulated summary of some abnormalities and errors in your daily work. First, after summing up, you will not be at a loss when you encounter the same problem next time, especially when you go online, other colleagues When you are waiting for you to solve the problem, it’s not very good for you to chirp. Second, you will often be asked similar questions during the interview. As an experienced social recruiting engineer, you can’t hire schools anymore. The interview as your own standard, you must have your own experience accumulation, and be ready to face uncertain situations at any time!