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Recent questions tagged nosql

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1.1k views

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nosql - Cassandra port usage - how are the ports used?

When experimenting with Cassandra I've observed that Cassandra listens to the following ports: TCP *:8080 TCP *: ... each of the ports listed? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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771 views

1 answer

nosql - What does Redis do when it runs out of memory?

This might be easy question but I am having a hard time finding the answer. How does Redis 2.0 handle running ... which data to keep in memory? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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832 views

1 answer

nosql - Is there a query language for JSON?

Is there a (roughly) SQL or XQuery-like language for querying JSON? I'm thinking of very small datasets that map ... a silly argument, but you get the idea..) Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

1 answer

nosql - Mongodb unwrap array

I have a lot of documents like { "id": 1, "name": "a", "namespace" : "a", "version" : ... stage. question from:https://stackoverflow.com/questions/65842424/mongodb-unwrap-array...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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783 views

1 answer

nosql - Activity Feed Schema design

I am working on a project, where users posts images/videos/texts and others can comment/like on them ... :https://stackoverflow.com/questions/65850749/activity-feed-schema-design...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

796 views

1 answer

nosql - neo4j - pagination return same results even when skip and order by are specified

I'm implementing infinite scroll and trying to get new items every time the user reach the bottom of the page. ... -return-same-results-even-when-skip-and-order-by-are-specified...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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862 views

1 answer

nosql - Trying to fetch data from Nested MongoDB Database?

I am beginner in MongoDB and struck at a place I am trying to fetch data from nested array but is it ... .com/questions/65901803/trying-to-fetch-data-from-nested-mongodb-database...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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779 views

1 answer

nosql - How to model a Manufacturer in DynamoDB

I come from relational database background and I'm struggling with the concepts of a single table to represents ... com/questions/65905470/how-to-model-a-manufacturer-in-dynamodb...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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810 views

1 answer

nosql - Neo4j match using a list

i have a node like this: (:a{name:'',lname:'',listNumb:[1,3,9]}) i want to select when 1 is ... question from:https://stackoverflow.com/questions/65929497/neo4j-match-using-a-list...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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888 views

1 answer

nosql - Hardware maintenance activity on One of the Cassandra Node

Need help, I have a 4 node cassandra Cluster, RF 2 and There is a Hardware maintenance activity (Total ... /65939518/hardware-maintenance-activity-on-one-of-the-cassandra-node...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.0k views

1 answer

nosql - MongoDB find by object key

I have the following structure (swagger file): { "swagger":"2.0", ... "paths": { "/pet": { ... from:https://stackoverflow.com/questions/65625787/mongodb-find-by-object-key...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

921 views

1 answer

nosql - Querying between a time range of hours in MongoDB

I want to extract a document between a specific range of hours(between 19:01 - 06:59) of daily activity. ... /questions/65644348/querying-between-a-time-range-of-hours-in-mongodb...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

868 views

1 answer

nosql - Redis, CouchDB or Cassandra?

(Closed). This question is opinion-based. It is not currently accepting answers. question from:https://stackoverflow.com/questions/4720508/redis-couchdb-or-cassandra...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

794 views

1 answer

nosql - Is MongoDB reliable?

question from:https://stackoverflow.com/questions/3505141/is-mongodb-reliable...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

799 views

1 answer

nosql - Scan HTable rows for specific column value using HBase shell

I want to scan rows in a HTable from hbase shell where a column family (i.e., Tweet) has a particular ... /11013197/scan-htable-rows-for-specific-column-value-using-hbase-shell...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

814 views

1 answer

nosql - Scan HTable rows for specific column value using HBase shell

I want to scan rows in a HTable from hbase shell where a column family (i.e., Tweet) has a particular ... /11013197/scan-htable-rows-for-specific-column-value-using-hbase-shell...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

811 views

1 answer

nosql - Scan HTable rows for specific column value using HBase shell

I want to scan rows in a HTable from hbase shell where a column family (i.e., Tweet) has a particular ... /11013197/scan-htable-rows-for-specific-column-value-using-hbase-shell...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

967 views

1 answer

nosql - Can I add a calculated boolean column to an Elasticsearch Kibana query from data from another query?

Let's imagine that we have an Elastic index and we want to get all the documents of that index and a ... -a-calculated-boolean-column-to-an-elasticsearch-kibana-query-from-data...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

2.7k views

1 answer

nosql - How to insert multiple row in dynamoDb using PHP?

I have written below Json for insert in dynamodb, but unable to insert. But if I try single element without array it's ... row it's working fine. How can I insert bulk row ?...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.0k views

1 answer

nosql - Consistency techniques for federated distributed systems (DB CAP, Simulations, etc.)

I am looking for an authoritative source of techniques used for consistency management (something better than best effort). ... this his/her career that we could consult with?...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

871 views

1 answer

nosql - DynamoDB migration and seeding

Is there any concept or tool that helps to manage data updates in DynamoDB? The most common operations: insert default ... common scenario, what is the appropriate way to do it?...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

3.7k views

1 answer

nosql - How to accept array of same type in graphql scheema

I am working with faunadb and it allows me to upload a .gql file and rest is handeled by faunadb, my app is a todo list app, ... '. (line 9, column 20): " + ' $subtodos: [Todo!],...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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