Could anyone please help?
Am 21.05.2018 um 10:56 schrieb chw:
> Hi everybody,
>
> the communication between the client and the broker is unclear to me.
> The documentation states:
>
>> The client initiates a socket connection and then writes a sequence of
>> request messages and reads back the corresponding response message. No
>> handshake is required on connection or disconnection.
> Does the client hold the TCP connection for its whole livecycle? That
> is, the client connects once to the broker and keeps the connection for
> all subsequent requests/messages (as opposed to a HTTP request)?
>
> As I know, the TCP requires a 3-way handshake to establish a connection.
> However, the documentation states that no handskake is required. Could
> anybody explain that point in more detail?
>
>> TCP is happier if you maintain persistent connections used for many
>> requests to amortize the cost of the TCP handshake, but beyond this
>> penalty connecting is pretty cheap.
> I do not understand what the purpose of this sentence is. On the one
> hand, TCP is explained a little. On the other hand, a justification
> concerning performance is made. But: none of this information helps the
> user. Should I, as user, ensure that a connection is maintained
> persistently or does Kafka do that for me?
>
> It would be great, if someone could update the documentation accordingly.
>
> Regards,
> Christian
>
>
