Est. MMXXVI A Field Journal of Systems & Summits JULY 2026 · Nº 07
Sreeraj.dev
Department № 03

Programming

Python, Django, Java, and the occasional encounter with millions of records.

Dispatches
10
Converting a multipage pdf to tiff
The Lead

Converting a multipage pdf to tiff

Converting a multipage pdf to tiff

· 2 min

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devops Nº 06
Moving from AWS Loadbalancers to Nginx

Moving from AWS Loadbalancers to Nginx

We run a k8s cluster for our healthcare EMR application. At the time, we only had one public facing service, so we used a Kubernetes Service of Type LoadBalancer. resource "kubernetes_service" "django" { metadata { name = "django" namespace = kubernetes_namespace.app_namespace.metadata[0].name annotations = tomap( { "service.beta.kubernetes.io/aws-load-balancer-ssl-cert" = var.django_acm_arn, "service.beta.kubernetes.io/aws-load-balancer-ssl-por

· 2 min
tech Nº 07
Django Bulk Save - 2 Fast 2 Big

Django Bulk Save - 2 Fast 2 Big

Continuing from Django Bulk Save, I wanted to test how would the copy_from function perform when I scale to over a million records. The copy_from scales incredibly well, it took 4 seconds to write 1.6 million rows. The rest of the article strays away from the actual topic. I decided to play around with different CSV libraries and figure out what would be the most efficient library to use when you have a file this large. You'd probably never encounter a scenario where you'd have to parse a mil

· 2 min
tech Nº 08
Streaming through millions of records trying to match an encrypted field : Java

Streaming through millions of records trying to match an encrypted field : Java

A year ago I was working on a really tiny part of a large non-consumer facing product (idk what's the correct term). I can't divulge much, I have done a lot of illegal things like calling a politician an idiot on social media, so I don't want to add more to the list. Imagine you ran an ice cream subscription service, and you had a lot of people on the payroll tasked with managing renewals for subscribers. Let's call them agents. You had an online portal for customers to manage/renew their subsc

· 3 min
devops Nº 09
Connecting Django to RDS via pgbouncer using IAM auth

Connecting Django to RDS via pgbouncer using IAM auth

Setting up the infra We primarily use a django backend with RDS postgres in a kubernetes cluster for production environments. We were trying to setup an environment which would be HIPAA compliant and secure as well, as well as keep complexity to a minimum in the backend layer.  We decided to go with IAM authentication to connect to RDS for the django application. The tricky part was to figure out how we would add pgbouncer between RDS and django to manage connection pooling issues. We setup a

· 3 min