Apache Kafka stores the message with offset. The following are several ways the messages can be retrieved with time;
Message Creation
When the message is created append the runtime to the message in the producer class before publishing the message to the topic as follows:
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The message can be retrieved using the runtime timestamp.
Apache Kafka System Tools
Apache Kafka provided following system tools:
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The following function gives the time as a long value
Get Offset Shell
get offsets for a topic
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--broker-list <hostname:port,..., REQUIRED: The list of hostname and hostname:port> port of the server to connect to.
--max-wait-ms <Integer: ms> The max amount of time each fetch request waits. (default: 1000)
--offsets <Integer: count> number of offsets returned (default: 1)
--partitions <partition ids> comma separated list of partition ids. If not specified, will find offsets for all partitions (default)
--time <Long: timestamp in milliseconds / -1(latest) / -2 (earliest) timestamp; offsets will come before this timestamp, as in getOffsetsBefore >
--topic <topic> REQUIRED: The topic to get offsets from.
Low Level Consumer API
For message partition reading, the kafka.api.OffsetRequest class defines two constants: EarliestTime and LatestTime,
to find the beginning of the data in the logs and the new messages stream.