Re: Basic Architecture Question
Roger, if you include the last read key as the start key for the next API call, will that retrieve the same key/row twice? The documentation says that both keys (start, finish) are included. Thanks On Thu, Apr 29, 2010 at 1:31 PM, Brandon Williams dri...@gmail.com wrote: On Thu, Apr 29, 2010 at 10:19 AM, David Boxenhorn da...@lookin2.comwrote: So now we can do any kind of range queries, not just for getting all keys as Jesse said? With RP, the key ranges are based on the MD5 sum of the key, so it's really only useful for getting all keys, or obtaining a semi-random row. -Brandon -- Patricio.-
A simple Cassandra CLI in Python with readline support
Hi all: I write a simple Cassandra CLI in Python with readline support, FEATURES - inherited all standard Apache Cassandra CLI features - readline for more information, see http://github.com/shuge/shuge-cassandra . -- Shuge Lee | Lee Li
Design Query
I am evaluating cassandra to implement activity streams. We currently have over 100 feeds with total entries exceeding 32000 implemented using redis ( ~320 entries / feed). Would like hear from the community on how to use cassandra to solve the following cases: 1. Ability to fetch entries by applying a few filters ( like show me only likes from a given user). This would include range query to support pagination. So this would mean indices on a few columns like the feed id, feed type etc. 2. We have around 3 machines with 4GB RAM for this purpose and thinking of having replication factor 2. Would 4GB * 3 be enough for cassandra for this kind of data? I read that cassandra does not keep all the data in memory but want to be sure that we have the right server config to handle this data using cassandra. Thanks, Rakesh
Re: Basic Architecture Question
It will. 2010/5/1 Patricio Echagüe patric...@gmail.com: Roger, if you include the last read key as the start key for the next API call, will that retrieve the same key/row twice? The documentation says that both keys (start, finish) are included. Thanks On Thu, Apr 29, 2010 at 1:31 PM, Brandon Williams dri...@gmail.com wrote: On Thu, Apr 29, 2010 at 10:19 AM, David Boxenhorn da...@lookin2.com wrote: So now we can do any kind of range queries, not just for getting all keys as Jesse said? With RP, the key ranges are based on the MD5 sum of the key, so it's really only useful for getting all keys, or obtaining a semi-random row. -Brandon -- Patricio.- -- Jonathan Ellis Project Chair, Apache Cassandra co-founder of Riptano, the source for professional Cassandra support http://riptano.com
