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KRKashif Rezaarchitecture-in-practice.hashnode.devSep 8 · 7 min read

Handling Duplicate Events Safely with Idempotency

In the previous article, we looked at retries and DLQ. Retries help you recover from temporary failures. But they also create a new risk: The same event may be delivered, retried, or processed more t

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SSapotaCorpsapotacorpvn.hashnode.devJul 12 · 8 min read

Salesforce Duplicate Management: Matching Rules, Duplicate Rules, and What Happens When They Conflict

A few years back we were brought in to assess a Salesforce org for a mid-size telecom company. Their sales team had been complaining for months that the CRM was unreliable — account managers were call

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VSVraj Soniblog.sonivraj.comJan 28 · 5 min read

Two Protocols that runs the Internet: TCP vs UDP explained simply

Did you ever wonder that how does server makes a response to client when client makes some requests. This responses travels through some protocols those 2 protocols are known as TCP & UDP. They are simply just 2 protocols that moves data from one app...

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NANafisa Alamcodengocool.hashnode.devJul 16, 2025 · 5 min read

3 Costly Django ORM Mistakes I Made as a Beginner — and How I Fixed Them

Mistake #1: Django QuerySet Filtering Doesn’t Work on Dynamic Fields I ran into a small but surprising behavior while working with Django QuerySets. You can't filter on dynamic fields — even if you attach them to your queryset objects. Here's what ...

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RVRachel Vinxsolvetech.hashnode.devMar 21, 2024 · 4 min read

How to Delete Duplicate JPG Files on Mac? - A 101 Blog

Capturing numerous JPG snapshots is quite common nowadays. However, it can clutter your Mac with duplicate files, leading to system slowdowns. To resolve this issue, we've crafted a comprehensive guide on "How to Delete Duplicate JPG Files on Mac?" D...

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CBChristoph Bilz (HamsterIdea.tech)hamsteridea.hashnode.devSep 3, 2023 · 2 min read

Bail out data duplicates with SQL

A good relational database model should avoid data duplicates. But sometimes you get working on a migration project. Maybe a project with a bad data basis. The migration process seems to work, it looks good. Then it happens: the migration script abor...

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HPHooman Pegahmehrappsupport.academyAug 3, 2023 · 5 min read

Tiny PowerShell Project 3 - Checksum verification

I cannot count the number of times that I had to work with engineers that held fancy titles but simply didn't know how to do a basic checksum verification. MD5 stands for "Message Digest Algorithm 5." It is a widely used cryptographic hash function t...

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GGROW2DEVgrow2dev.hashnode.devDec 11, 2022 · 2 min read

ServiceNow: Check for duplicates in an array

Use cases Check if an array contains duplicate values Options / Tools to achieve this every() some() filter() more will be added soon How To - Details: 1. Use every() with indexOf() /* ** @param (string) element - current element that is being ...