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The number of L7 proxies supporting the Kafka protocol is extremely limited nowadays but there is an effort to bring support for the Kafka protocol in various proxies. Envoy has recently introduced support for the Kafka protocol [1][2], Linkerd has expressed its interest [3], and few people have implemented custom ones for specific use cases [4][5]. There is not no doubt that this trend will continue and that intercepting the Kafka protocol will become easier and more common.
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