couchbase

问题 I want to query (or index) an array-valued field. As an example, say I want to retrieve this document { "myarray": [ 1, 2, 3]} . I can do this with ANY...SATISFIES or with UNNEST . From the documentation, these seem functionally the same. SELECT * FROM `bucket` AND ANY v in myarray SATISFIES v=3 END; SELECT * FROM `bucket` UNNEST myarray v WHERE v=3 What are the use cases for each? 回答1: For those two queries, they do similar things, but both of these approaches provide other functionality.

问题 Consider following piece of code: import asyncio from acouchbase.cluster import Cluster from couchbase.cluster import ClusterOptions from couchbase.cluster import PasswordAuthenticator async def do_crud_op(): cb = Cluster.connect("couchbase://localhost", options=ClusterOptions(PasswordAuthenticator("user", "password"))) cb = cb.bucket('customers') await cb.upsert('id', {'some': 'value'}) return await cb.get('id') loop = asyncio.get_event_loop() rv = loop.run_until_complete(do_crud_op()) print

问题 Getting this error when I run in unix system Error: The module '/app/node_modules/couchbase/build/Release/couchbase_impl.node' was compiled against a different Node.js version using NODE_MODULE_VERSION 57. This version of Node.js requires NODE_MODULE_VERSION 59. Please try re-compiling or re-installing the module (for instance, using `npm rebuild` or `npm install`). at Object.Module._extensions..node (module.js:678:18) at Module.load (module.js:561:32) at tryModuleLoad (module.js:501:12) at

问题 I need to clear a Couchbase bucket each time before unit test runs. I use the Java SDK > 2.0 version. In previous versions I found this wonderful method http://www.couchbase.com/autodocs/couchbase-java-client-1.1.1/com/couchbase/client/ClusterManager.html#flushBucket(java.lang.String) but it does not exist in new version. Is there some way to clear data from bucket? I could delete by fetching all keys of documents and then delete them all, but I want to use more pretty way. 回答1: Actually in

问题 I need to clear a Couchbase bucket each time before unit test runs. I use the Java SDK > 2.0 version. In previous versions I found this wonderful method http://www.couchbase.com/autodocs/couchbase-java-client-1.1.1/com/couchbase/client/ClusterManager.html#flushBucket(java.lang.String) but it does not exist in new version. Is there some way to clear data from bucket? I could delete by fetching all keys of documents and then delete them all, but I want to use more pretty way. 回答1: Actually in

问题 While saving Map type data in couchBase I am getting an exception Caused by: org.springframework.data.mapping.MappingException: Couldn't find PersistentEntity for type java.lang.Object! I've taken a map in DataModel @Data public class test { private Map<String,Object> testMap; } I found this and override couchBase configuration to do customMapping in case of Object Type like protected <R> R read(final TypeInformation<R> type, final CouchbaseDocument source, final Object parent) { if (Object

问题 While saving Map type data in couchBase I am getting an exception Caused by: org.springframework.data.mapping.MappingException: Couldn't find PersistentEntity for type java.lang.Object! I've taken a map in DataModel @Data public class test { private Map<String,Object> testMap; } I found this and override couchBase configuration to do customMapping in case of Object Type like protected <R> R read(final TypeInformation<R> type, final CouchbaseDocument source, final Object parent) { if (Object

问题 I did a small benchmark test to compare Couchbase (running in Win) with Redis and MySql (EDIT: added Aerospike to test) We are inserting 100 000 JSON "documents" into three db/stores: Redis (just insert, there is nothing else) Couchbase (in-memory Ephemeral buckets, JSON Index on JobId) MySql (Simple table; Id (int), Data (MediumText), index on Id) Aerospike (in-memory storage) The JSON file is 67 lines, about 1800 bytes. INSERT: Couchbase: 60-100 seconds (EDIT: seems to vary quite a bit!)

来源： https://stackoverflow.com/questions/57116620/couchbase-cant-mutatein-multiple-upserts-with-null-value

来源： https://stackoverflow.com/questions/57116620/couchbase-cant-mutatein-multiple-upserts-with-null-value