khuangz opened a new issue, #4274:
URL: https://github.com/apache/shenyu/issues/4274
### Question
any suggestion to prevent this issue？
here is the error stack
`Caused by: io.netty.util.internal.OutOfDirectMemoryError: failed to
allocate 4194304 byte(s) of direct memory (used: 2143289351, max: 2147483648)
at
io.netty.util.internal.PlatformDependent.incrementMemoryCounter(PlatformDependent.java:806)
at
io.netty.util.internal.PlatformDependent.allocateDirectNoCleaner(PlatformDependent.java:735)
at
io.netty.buffer.PoolArena$DirectArena.allocateDirect(PoolArena.java:649)
at io.netty.buffer.PoolArena$DirectArena.newChunk(PoolArena.java:624)
at io.netty.buffer.PoolArena.allocateNormal(PoolArena.java:203)
at io.netty.buffer.PoolArena.tcacheAllocateNormal(PoolArena.java:187)
at io.netty.buffer.PoolArena.allocate(PoolArena.java:136)
at io.netty.buffer.PoolArena.allocate(PoolArena.java:126)
at
io.netty.buffer.PooledByteBufAllocator.newDirectBuffer(PooledByteBufAllocator.java:396)
at
io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:188)
at
io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:179)
at
io.netty.channel.unix.PreferredDirectByteBufAllocator.ioBuffer(PreferredDirectByteBufAllocator.java:53)
at
io.netty.channel.DefaultMaxMessagesRecvByteBufAllocator$MaxMessageHandle.allocate(DefaultMaxMessagesRecvByteBufAllocator.java:120)
at
io.netty.channel.epoll.EpollRecvByteAllocatorHandle.allocate(EpollRecvByteAllocatorHandle.java:75)
at
io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:785)
at
io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:487)
at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:385)
at
io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:995)
at
io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
at
io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.lang.Thread.run(Thread.java:750)`
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