TTL and Cassandra counters
Hello Our current application uses Cassandra to hold the chat items for user’s conversation and a counter of unread chat messages (per each conversation). We use TTL to delete old chat items, but we fail to see how we can define a call back which will trigger an update (decrease) to the counters’ value. Please consult on how we can achieve a solution for this issue.. -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/TTL-and-Cassandra-counters-tp7581990.html Sent from the cassandra-u...@incubator.apache.org mailing list archive at Nabble.com.
Counter Column
I have encountered the following piece of information regarding the use of ‘Counter Column’ in Cassandra: “If a write fails unexpectedly (timeout or loss of connection to the coordinator node) the client will not know if the operation has been performed. A retry can result in an over count” (- quoted from http://wiki.apache.org/cassandra/Counters). is it still relevant? -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Counter-Column-tp7432010p7432010.html Sent from the cassandra-u...@incubator.apache.org mailing list archive at Nabble.com.
column’s timestamp
Is it possible to fetch a column based on the row key and the column’s timestamp only (not using the column’s name)? -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/column-s-timestamp-tp7429905p7429905.html Sent from the cassandra-u...@incubator.apache.org mailing list archive at Nabble.com.
