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/usr/lib/swipl/library/ext/redis/redis.pl
All Application Manual Name SummaryHelp

  • ext
    • redis
      • redis.pl -- Redis client
        • redis_server/3
        • redis_connect/1
        • redis_connect/3
        • tls_verify/5
        • sentinel_slave/4
        • redis_disconnect/1
        • redis_disconnect/2
        • redis/2
        • redis/3
        • redis/1
        • redis_write/2
        • redis_read/2
        • redis_get_list/3
        • redis_get_list/4
        • redis_set_list/3
        • redis_get_hash/3
        • redis_set_hash/3
        • redis_array_dict/3
        • redis_scan/3
        • redis_sscan/4
        • redis_hscan/4
        • redis_zscan/4
        • redis_current_command/2
        • redis_current_command/3
        • redis_property/2
        • redis_subscribe/4
        • redis_subscribe/2
        • redis_unsubscribe/2
        • redis_current_subscription/2
      • redis_streams.pl -- Using Redis streams
 redis_subscribe(+Redis, +Channels, -Id, +Options) is det
Subscribe to one or more Redis PUB/SUB channels. This predicate creates a thread using thread_create/3 with the given Options. Once running, the thread listens for messages. The message content is a string or Prolog term as described in redis/3. On receiving a message, the following message is broadcasted:
redis(Id, Channel, Data)

If redis_unsubscribe/2 removes the last subscription, the thread terminates.

To simply print the incomming messages use e.g.

?- listen(redis(_, Channel, Data),
          format('Channel ~p got ~p~n', [Channel,Data])).
true.
?- redis_subscribe(default, test, Id, []).
Id = redis_pubsub_3,
?- redis(publish(test, "Hello world")).
Channel test got "Hello world"
1
true.
Arguments:
Id- is the thread identifier of the listening thread. Note that the Options alias(Name) can be used to get a system wide name.
ClioPatria (version V3.1.1-51-ga0b30a5)