@Inherited @Documented @Target(value=TYPE) @Retention(value=RUNTIME) public static @interface ChannelHandler.Sharable
can be added to one or more
ChannelPipelines multiple times
without a race condition.
If this annotation is not specified, you have to create a new handler instance every time you add it to a pipeline because it has unshared state such as member variables.
This annotation is provided for documentation purpose, just like the JCIP annotations.
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