Srce Cde - Chirag Rathod

Temperature doesn't add creativity.

Drop one tool from an identical request: gpt-5.2 keeps 76% of the prompt cache, gpt-5.5 keeps nothing.

How Reciprocal Rank Fusion (RRF) merges retriever results in hybrid search, why it beats averaging scores, and the tradeoff that tells you when to skip it.

Run Claude Code with open source models via Ollama - completely free, private, and offline.

Understand vector spaces in machine learning with clear math definitions and a memorable kitchen analogy.

Build product search with Amazon S3 Vector Buckets.

Learn Manhattan (L1) and Euclidean (L2) distance with step-by-step math, visual examples, and practical guidance on when to use each in machine learning.

Learn how asterisk (*) and forward slash (/) work in Python function parameters.

Secure AWS Lambda function URLs with IAM authentication.

Understand the difference between raster and vector images.

Explore digital image fundamentals: pixels, color spaces, bit depth, and compression.

Create AWS Glue custom classifiers using Grok patterns.

Save AWS costs by automatically stopping EC2 instances on weekends.

Get email alerts when users login to AWS console.

Query S3 data using SQL with S3 Select.

Mount Azure Blob Storage as a file system on Docker containers using BlobFuse.

Mount Azure File Storage as a Docker volume on Azure VMs.

Transform CSV to Parquet using AWS Glue.

Set up remote development with VS Code and EC2.

Restrict access to S3-hosted static websites by IP address.

Get email alerts when errors appear in CloudWatch logs.

Whitelist IP addresses for AWS Lambda function URLs.

Whitelist IP addresses in Amazon HTTP API using Lambda Authorizers.

Map a static outbound IP to AWS Lambda using Elastic IP, VPC, and NAT Gateway.

Whitelist IP addresses for AWS REST API Gateway endpoints.

Automate tasks using two-way SMS with Amazon Pinpoint.

Build AWS Lambda layers with a single command using Docker.

Handle SQS message failures gracefully with AWS Lambda partial batch response.

Set up OpenCV on AWS Lambda using layers.

What is MLOps and why do you need it?

Speed up Python programs with memoization.

Understand image kernels and convolution matrices for image processing.

Transfer files to and from EC2 instances using SCP (Secure Copy Protocol).

Read PDF files from S3 using AWS Lambda.

Loading, Displaying & Saving images using OpenCV