194,181 questions
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11
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How to correctly use retry_delay or retry_delay_sec in Airflow YAML DAG?
I'm currently working with Apache Airflow and trying to configure retries for my DAG tasks using the retry_delay (or retry_delay_sec) parameter in a YAML-based DAG definition.
However, I'm running ...
0
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0
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22
views
Connect to EViews data base in R
I have an Eviews data base which is stored in an .edb file (along with an .e0, .e1a, and and .e1b file). Is there any way I can read from (and optimally also write to) this DB with R?
I am aware of ...
- 57
0
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37
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Redis data structure and storage optimzation
I have an application which keeps appending data for a wide range of sessionIDs and expiring them in a few hours, currently we use Redis List data structure and having the SessionID as the key.
For ...
0
votes
1
answer
59
views
In three-layer architecture, what do layer dependencies start to look like when OOP objects are involved in the Business layer?
As a coding test I've been tasked with developing a toy three-layer architecture DBMS project, involving OOP principles. The three-layer stuff isn't strictly my background so I've been trying to study ...
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0
votes
1
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26
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Effective pagination for descending order queries in DynamoDB
I have an use-case of building a news feed for which I store the articles along with the timestamps in a DynamoDB table. I want to build infinite scrolling capability, and retrieve the article with ...
- 187
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50
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The Laravel project on production continues to give database connection error intermittently
The Laravel project on production continues to show the error below intermittently:
SQLSTATE[HY000] [1130] Host 'localhost' is not allowed to connect to this MariaDB server (Connection: mysql, SQL: ...
- 1,220
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29
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Data structure for dynamic documents based on text modules with version history [closed]
I'm currently working on a database structure in Microsoft Dataverse to assemble dynamic documents. The overall goal is to create documents that update automatically if, for example, I change an image ...
- 89
0
votes
1
answer
44
views
accessing Same table by different components [closed]
I have an application which has been modularized to different modules with a view for easier splitting to microservices. in this structure we have scenarios where more than one component have to ...
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1
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0
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31
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makeblastdb Error: Duplicate seq_ids GNL|BL_ORD_ID|90650 despite unique FASTA headers and version 4 database
I’m trying to build a BLAST nucleotide database using makeblastdb (NCBI BLAST 2.16.0) inside a Singularity container. My FASTA headers have been renamed to be unique in the format:
>file<file#&...
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1
vote
1
answer
56
views
Laravel stancl/tenancy: Tenant migrations not running (separate tenant DBs, migrations in database/migrations/tenant)
I am running tenant new migrations (orders/order_items) that live in database/migrations/tenant across multiple tenants. Each tenant has its own database (tenant_1, tenant_2, tenant_3, ...) and there ...
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-2
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43
views
How to make a self hosting database for an Expo app? [closed]
I am developing a project in Expo on which I use Firebase as my database. But I would like to change now for a self hosted database for my app. The idea was for one of my computers in the lab to stay ...
0
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28
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Enterprise Architect And Database Management [closed]
I'm using Sparx Enterprise Architect to visualize every aspect of my application, now, I was wondering, if after two years I want to modify database, for example one of my entities has an attribute ...
-6
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0
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43
views
MongoDB Video Streaming [closed]
I am creating a document database system for a video streaming service such as Paramount+. Would anyone be able to suggest which collections I will need and how they are related etc.
Thanks
I feel I’m ...
0
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0
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36
views
Error seeding data: [AppwriteException: Invalid document structure: Missing required attribute "image"]
Working on a react native app and having issues with the Appwrite database.
here is the error:
ERROR Error seeding data: [AppwriteException: Invalid document structure: Missing required attribute &...
1
vote
1
answer
33
views
How can I automatically add user's info to a model in Django?
I have a status and user apps in my project and all the statuses are obviously created by particular users. I want to keep info about statuses creators (id) in my db, but I don't know how to add it ...
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