Most of the time users won’t even notice a thing. Once the primary cluster functions again, Pulsar clients can switch back to the primary cluster. The switchover is manually set by administrators. You can set the client memory allocator configurations through Java properties.Ĭontrolled cluster-level failover supports Pulsar clients switching from a primary cluster to one or several backup clusters. In addition to client-level configuration, you can also apply producer and consumer specific configuration as described in sections below.
Java http client example full#
Maximum duration for completing a requestĬheck out the Javadoc for the PulsarClient class for a full list of configurable parameters. If the duration passes without a response from a broker, the connection attempt is dropped Seconds of keeping alive interval for each client broker connectionĭuration of waiting for a connection to a broker to be established The maximum number of rejected requests of a broker in a certain time frame (30 seconds) after the current connection is closed and the client creates a new connection to connect to a different broker The maximum number of lookup requests allowed on each broker connection to prevent overload on broker The number of concurrent lookup requests allowed to send on each broker connection to prevent overload on broker Whether to enable TLS hostname verification Whether the Pulsar client accepts untrusted TLS certificate from broker Whether to use TLS encryption on the connection Whether to use TCP no-delay flag on the connection to disable Nagle algorithm If you want multiple threads to process a single topic, you need to create a shared subscription and multiple consumers for this subscription. For a given consumer, the listener is always invoked from the same thread to ensure ordering. The listener thread pool is shared across all the consumers and readers using the "listener" model to get messages. The number of threads used for handling message listeners. The number of threads used for handling connections to brokers Set statsIntervalSeconds to 1 second at least. Stats is activated with positive statsInterval
To use the latest version, add the pulsar-client library to your build configuration. The latest version of the Pulsar Java client library is available via Maven Central.
Java http client example how to#
For how to use the Java admin client, see Pulsar admin interface.
This document focuses only on the client API for producing and consuming messages on Pulsar topics. In this case, you can use pulsar-client-all, which shades dependencies only one time and reduces the size of dependencies.
Java http client example update#
It would be troublesome if you introduce new dependencies but forget to update shading rules. Consequently, the applications using both pulsar-client and pulsar-client-admin have redundant shaded classes. Include both pulsar-client and pulsar-client-adminīoth pulsar-client and pulsar-client-admin are shaded packages and they shade dependencies independently. Javadoc for the Pulsar client is divided into two domains by package as follows. The current Java client version is 2.10.1.Īll the methods in producer, consumer, readers and TableView of a Java client are thread-safe.
You can use a Pulsar Java client to create the Java producer, consumer, readers and TableView of messages and to perform administrative tasks.
0 kommentar(er)
