doc: fix outdated external link

Page is not available on ibm.com anymore. Linking to web archive.
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Eduard Wirch 2022-02-16 20:36:54 +01:00 committed by GitHub
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@ -26,8 +26,8 @@ package io.grpc.stub;
* {@code StreamObserver} and passes it to the GRPC library for receiving.
*
* <p>Implementations are not required to be thread-safe (but should be
* <a href="http://www.ibm.com/developerworks/library/j-jtp09263/">thread-compatible</a>).
* Separate {@code StreamObserver}s do
* <a href="https://web.archive.org/web/20210125044505/https://www.ibm.com/developerworks/java/library/j-jtp09263/index.html">
* thread-compatible</a>). Separate {@code StreamObserver}s do
* not need to be synchronized together; incoming and outgoing directions are independent.
* Since individual {@code StreamObserver}s are not thread-safe, if multiple threads will be
* writing to a {@code StreamObserver} concurrently, the application must synchronize calls.