Actually we are using json patch/json pointer extensively to limit data sent through network or update live data on a client(its embedded world). If user is changing single parameter on a client we sent just json patch as defined in RFC(including arrays modifications). Libraries are mature and simple to use(on client, on server we are using C++ so I suppose its a in house solution), thats why it's hard for me to understand why we need another solution for the same problem. Having said that I haven't used them in Kafka world.