Questions tagged [dynamodb]
Amazon DynamoDB is a NoSQL Database featured as a part of the AWS.
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Updating attributes, including PK and SK. Move up to 10 Billion records to new table, while still capturing live changes
Looking to shorten the attributes for some of our tables in DynamoDB, including the PK and SK and am currently brainstorming on what would be the best way to achieve this. The largest table has 10 ...
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Best practice to store subitems
I am going to create my first Dynamodb database table. I have 3 options in my mind:
1. Create a long table where every subitem is a new row.
Example:
user John | item 1 | 2021
user John | item 2 | ...
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Access the same Entity via various attributes in DynamoDB
I'll begin by saying I am new to DynamoDB and the world of NoSQL in general. I have a patient entity and I am storing it in a DynamoDB table.
My access patterns for the patient entity are:
Get ...
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parse json into a relational database or use a NoSQL?
I am retrieving a JSON file from an API which size varies between 100kb to 7mb. The structure of the response is:
I initially thought in storing the response in a relational database, with the ...
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How to fully migrate data from dynamodb to postgresql
I have large data set inside dynamodb and want to move them all to postgresql and only can have 1 hour downtime. Whats the best tool or option to migrate and map all of my data from dynamo to postgres ...
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Does it make sense to separate records in a document DB (e.g. DynamoDB) for better query performance?
I've recently started working with DynamoDB, and most of my experience is in traditional data warehousing (e.g. sql server). One common pattern which I saw when working with SQL server was that we ...
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How do I search by attribute in DynamoDB?
I inherited a site that uses DynamoDB for its database, which I know nothing about unfortunately, and I'm trying to change a user's email for them. There appears to be a users table in DynamoDB, but ...
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Help needed with several engines use case [closed]
We are developing an app, aprox 50k RPM read, 1k RPM write, it ask via key and get a JSON.
The search is always made by key.
I'm inclined to use one MySQL 8 table with a Id field and JSON field with ...
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SQL vs NoSQL: Fetching All records in DynamoDB vs SQL Database
I am designing database for a project which requires frequent querying of all the records. The total number of records will be less than 500K. One of the databases I am considering is AWS DynamoDB ...
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Dynamo get items from last X days using composite key
I have the following sort key in a dynamo db table:
YYYY-MM-DD#<USER_ID>#<CATEGORY_ID>
Im trying to solve the following two access patterns:
get all item for a user in the last x days
...
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DynamoDB: How to model data that's shared and queried by all users?
I am very intrigued by DynamoDB, and it works incredibly well when I model the data for my main use case for my application. That being said, there is one specific use case that I can't wrap my head ...
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How to implement correctly from SQL to NoSQL (DynamoDB)?
I am just new in NoSQL and DynamoDB. I try to moving from using AWS RDS to DynamoDB.
I have table user which can have more than one of work experiences and can have more than one of interest (table ...
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Can PostGIS or Oracle Spatial and Graph scale to hundreds of terabytes of data, or should I use a NoSQL option like DynamoDB? [closed]
I'm going to have a very large data set (a few hundred terabytes big eventually), but it is very well structured, relatively simple data involving lat, long points (which is why I want some GIS ...
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Most effective way of logging user query activity
We are logging and permanently storing all the queries performed about private persons in our database. Due to GDPR we need to be able to show all the entities who have requested personal data and the ...
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Suitable NoSQL DB design for a fleet of IoT devices [closed]
This is my use case:
10,000 IoT devices
Each IoT device sends its environmental data (temperature, pressure, etc.) every 30 seconds
Data of each device will be kept for 24 hours
The main requirement ...
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How does an encrypted DynamoDB (the same question applies to RDS as well) query work?
I am trying to understand whether the primary key is encrypted when I choose to encrypt at rest for AWS DynamoDB
If the primary key is encrypted, how does a primary-key lookup get
performed under the ...
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How to update DynamoDB item by searching on GSI primary key?
Table has these columns on DynamoDB:
primaryKey
sortKey
GSI_primaryKey
data
And there is GSI added with primary key GSI_primaryKey and sort key on primaryKey
How to update column data if I have ...
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DynamoDB query by flag which tells if it's time to re-process the item
I have a table of stuff and some of it needs to be processed with cron daily or every minute. On SQL table I would add column last_time_processed and save timestamp in it. The query would take rows ...
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Storing ~700 Tb in SQL Db
I am a newbie to Db's on a whole, and I came across a tutorial, wherein we needed to store ~700 Tb of data over a few years. It was mentioned that scaling SQL for such limits of data is not the best ...
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When to use multiple tables in DynamoDB?
The DyanmoDB best practices make it clear that:
You should maintain as few tables as possible in a DynamoDB application. Most well designed applications require only one table.
I find it amusing ...
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NoSql - Dynamo db - when do you need multiple tables?
I'm experienced in RDBMS, but new to NoSql. This aws dynamodb design advice says that "most well designed applications require only one table". I'm trying to wrap my head around that. I don't see a ...
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How can I reuse a table name after deletion (in DynamoDB)?
I am working through a tutorial which requires creating a DynamoDB table with a specific name. On my first pass at creating the table I did something out sync with the tutorial, so I deleted the table ...
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DynamoDB how to best perform != query?
Within the key-value, hash-table DynamoDB we can only query for partition keys and optionally for a sorting key.
My Question is: If a Table A has items with primary partition attribute aId and I've ...
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Insert into DynamoDB when data has different attributes
Is there any way dynamodb can handle dynamic attributes? Depending on the request, I need to store different web query parameters in the same table.
What I want to do is like this, if I make a java ...
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Porting a MySQL back-end to AWS DynamoDB
I'm setting up a back-end for a mobile application using Amazon Web Services. I'm fine with S3 and Lambda, but about using DynamoDB I have some problems. Before using AWS, I was developing the core of ...
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most efficient way to deal with real time gps data. S3 vs dynamoDB vs postgres
I have an application that is very write heavy. It saves GPS data every second. The way I handle it at the moment is to store the data locally and upload it to s3 every 5 minutes. The database (...
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How should I use DynamoDB table
I have a list of items. Each item is attached to several urls and each url has a score number. So I have something like this :
How should I organise this in dynamoDB? How should I format my Json file ...
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Best way to store a list of numbers where individual numbers can be deleted
I want to store a list of 50 or less nine digit numbers for each primary key in a DynamoDB. Usually I would be using a get request to retrieve the list for a specific primary key.
Sometimes I would ...
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NoSQL : Getting latest item from DynamoDB table
I'm implementing chat server currently, with dynamoDB.
Here is keys from ChatData table
Primary partition key : roomNo
Primary sort key : seq
Chat server, can created many instant rooms, ...
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Which AWS database services are designed for storing logging records like log4j or log4perl?
I have been using the file system for log4j and log4perl records and want to start using a database to store the information, especially to lookup records organized by pid. We are using MySQL RDS for ...
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DynamoDB - Multiple range keys
Is it possible to have multiple fields as range key?
Say I have a table where each row is uniquely identified by <A,B,C>
-------------------------------
A | B | C | D | E |
----...
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After modifying the throughput of a DynamoDB table, where can I see the new throughput value before it gets active?
After modifying the throughput of a table in DynamoDB, the "Modify Throughput" is greyed out:
Where can I see the new throughput value before it gets active? Sometimes it takes a while for a ...
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Why are some write requests throttled whereas the average consumed write capacity is below the provisioned write capacity?
I see the following graphs in one of my DynamoDB table:
Between 2/15 9:30 and 2/15 10:00 some write requests were throttled while the average consumed write capacity was below the provisioned write ...
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History of the provisioned write capacity in DynamoDB beyond the last two weeks
Is there any way to see the history of the provisioned write capacity for a DynamoDB table beyond the last two weeks? When I go to the Amazon AWS console, select a DynamoDB table and look at the ...
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Import CSV or JSON file into DynamoDB
I have 1000 CSV files. Each CSV file is between 1 and 500 MB and is formatted the same way (i.e. same column order). I have a header file for column headers, which match my DynamoDB table's column ...
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Best way to store, query and update 300M rows of data
I'm struggling to find a solution (preferably DBaaS) that I can rely on for storing and querying some 300M rows of data (roughly 100GB).
The data in question is pretty much numeric. There is also one ...
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Using AWS DynamoDB Geospatial index with Python
Amazon's AWS DynamoDB features Geospatial Indexing, which facilitates geo queries:
Query Support: Box queries return items that fall within a pair of geo
points that define a rectangle as ...
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DynamoDB: searching with primary key or range key, which way is faster?
To those familiar with DynamoDB, I'm trying to make a table where items only have 2 entries. For example, . Most of the time I'll be searching the user_id with a facebook_id on hand.
Amazon's ...
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