cassandra

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Cassandra Client - examining columns as Strings

I am new to Cassandra & I am using the Hector Java Client for writing/reading from it. I\'ve the following code to insert values -[详细]

2023-04-08 17:30 分类：问答
How to get systemtimestamp in Cassandra

How will i get systemtimestamp from cassandra-cli like select sysdate from dual; i开发者_Go百科n oracle.[详细]

2023-04-08 16:56 分类：问答
lowest possible timeuuid in php (phpcassa)

pycassa has pycassa.util.convert_time_to_uuid(time_arg, lowest_val=True, randomize=False) phpcassa has static string uuid1 ([string $node = null], [int $time = null])[详细]

2023-04-08 15:22 分类：问答
How does column-oriented NoSQL differ from document-oriented?

The three types of NoSQL databases I\'ve read about is key-value, column-oriented, and document-oriented.[详细]

2023-04-08 11:07 分类：问答
Accumulate data for batch updates and send it after passing threshold limits of size or after timed duration?

Is it a good strategy to accumulate in webserver memory upto a specific limit of data over time that is being written to the database & send it as batch updates after every specified in开发者_C百科[详细]

2023-04-08 02:35 分类：问答
Does Cassandra uses Heap memory to store blooms filter ,and how much space does it consumes for 100GB of data?

I come to know that cassandra uses blooms filter for perfor开发者_运维技巧mance ,and it stores these filter data into physical-memory.[详细]

2023-04-07 18:34 分类：问答
Super column vs serialization vs 2 lookups in Cassandra

We have: users, each of which has events, each of which has several properties (time, type etc.). Our basic use case is to fetch all events of a given user in a given time-span.[详细]

2023-04-07 18:32 分类：问答
memcache alongwith PHPCassa

I am using PHPCassa to get values out of my cassandra instance where my result array looks something like :[详细]

2023-04-06 13:45 分类：问答
cassandra-cli: unable to coerce 'allias' to version 1 UUID

I\'m triyng to create a column family with TimeUUIDType as name of row: create column family users with column_type = \'Standard\'[详细]

2023-04-06 12:50 分类：问答
Lazyboy AttributeError while saving to cassandra

Hey Stackoverflow comm, I\'m trying to write to my cassandra database but something is going wrong.. Some datas: I\'m using Python 2.7 on Ubuntu (11.04), cassandra 0.8.4 and lazyboy 0.7.5. While I wa[详细]

2023-04-06 00:15 分类：问答