Archive

2026 ²⁵

May ⁵

Deploying Sanchayam

May 26, 2026 · 3 min · 511 words · Sagar Nayak

Corporate Actions and the Backfill Pipeline

May 20, 2026 · 5 min · 865 words · Sagar Nayak

Friday Snapshots: Weekly Portfolio and Historical Backfill

May 14, 2026 · 4 min · 811 words · Sagar Nayak

XIRR from Scratch: Newton-Raphson on a Portfolio

May 8, 2026 · 5 min · 1040 words · Sagar Nayak

FIFO Cost Basis and Realized P&L

May 2, 2026 · 4 min · 678 words · Sagar Nayak

April ⁵

Price Feed Queue: Providers, Routing, and Rate Limits

April 26, 2026 · 6 min · 1078 words · Sagar Nayak

FX: USD Pivot, Two-Layer Cache, Stale-While-Revalidate

April 20, 2026 · 4 min · 771 words · Sagar Nayak

Auth: OTP Reset, Invite Signup, and Token Rotation

April 14, 2026 · 4 min · 810 words · Sagar Nayak

The Asset Schema: One Table for Every Asset Type

April 8, 2026 · 4 min · 841 words · Sagar Nayak

Sanchayam: A Self-Hosted Multi-Asset Portfolio Tracker

April 2, 2026 · 4 min · 706 words · Sagar Nayak

March ⁵

Deploying MediaBridge

March 27, 2026 · 5 min · 954 words · Sagar Nayak

Lambda Thumbnail Pipeline

March 21, 2026 · 5 min · 918 words · Sagar Nayak

S3 Archive Restore Automation

March 15, 2026 · 5 min · 929 words · Sagar Nayak

Global Cross-Bucket Search

March 9, 2026 · 4 min · 783 words · Sagar Nayak

Streaming DFS Search over WebSocket

March 3, 2026 · 6 min · 1198 words · Sagar Nayak

February ⁵

The Two-Layer Cache Architecture

February 25, 2026 · 5 min · 1065 words · Sagar Nayak

JWT Refresh Queue Pattern

February 19, 2026 · 5 min · 934 words · Sagar Nayak

Zero-Tolerance Security Model

February 13, 2026 · 6 min · 1088 words · Sagar Nayak

Direct-to-S3 Upload with Presigned URLs

February 7, 2026 · 6 min · 1163 words · Sagar Nayak

MediaBridge: Self-Hosted S3 File Management for Teams

February 1, 2026 · 6 min · 1079 words · Sagar Nayak

January ⁵

Deploying PurelyManage: systemd, nginx, and S3 Frontend

January 26, 2026 · 4 min · 751 words · Sagar Nayak

imapsync Setup and the Async Job Architecture

January 20, 2026 · 5 min · 879 words · Sagar Nayak

Running IMAP Migration Jobs in PurelyManage

January 14, 2026 · 5 min · 944 words · Sagar Nayak

Collecting IMAP Credentials Without Storing Plaintext

January 8, 2026 · 5 min · 1017 words · Sagar Nayak

DNS Health Monitoring Without Hammering the API

January 2, 2026 · 5 min · 950 words · Sagar Nayak

2025 ²¹

December ⁵

Email User Management in PurelyManage

December 27, 2025 · 4 min · 678 words · Sagar Nayak

Adding and Verifying Domains in PurelyManage

December 21, 2025 · 4 min · 679 words · Sagar Nayak

Building Against an Undocumented API: PurelyMail

December 15, 2025 · 5 min · 1005 words · Sagar Nayak

Rogue Admin Protection with a 24-Hour Deletion Queue

December 9, 2025 · 6 min · 1078 words · Sagar Nayak

Storing Credentials Securely: AES-256-GCM and JWT

December 3, 2025 · 7 min · 1313 words · Sagar Nayak

November ⁴

PurelyManage: Open-Source Admin Panel for PurelyMail

November 27, 2025 · 5 min · 971 words · Sagar Nayak

Telegram Attendance Tracker with n8n and Google Sheets

November 23, 2025 · 13 min · 2698 words · Sagar Nayak

ESP32 Development Setup on Ubuntu

November 22, 2025 · 4 min · 846 words · Sagar Nayak

ESP32 WiFi Ping Server for On-Prem Power Monitoring

November 22, 2025 · 7 min · 1282 words · Sagar Nayak

October ³

Mount AWS S3 as a Windows Drive with rclone

October 15, 2025 · 3 min · 616 words · Sagar Nayak

Error Handling in Spring Boot: Controllers vs Filters

October 14, 2025 · 2 min · 383 words · Sagar Nayak

FolderSync + AWS S3: Private Android Photo Backup

October 12, 2025 · 2 min · 347 words · Sagar Nayak

September ¹

Security Setup in Spring Boot: CORS, JWT, and API Tiers

September 18, 2025 · 3 min · 553 words · Sagar Nayak

August ¹

Expense Tracker (Part 5/5): Frontend

August 11, 2025 · 2 min · 275 words · Sagar Nayak

July ¹

Expense Tracker (Part 4/5): Backend APIs

July 19, 2025 · 2 min · 313 words · Sagar Nayak

June ¹

Expense Tracker (Part 3/5): AWS Setup

June 6, 2025 · 2 min · 341 words · Sagar Nayak

May ¹

Expense Tracker (Part 2/5): Database Planning

May 23, 2025 · 2 min · 362 words · Sagar Nayak

April ¹

Expense Tracker (Part 1/5): Introduction

April 9, 2025 · 2 min · 333 words · Sagar Nayak

March ¹

Multi-Region EC2 Routing with Session Pinning and JWT

March 14, 2025 · 3 min · 581 words · Sagar Nayak

February ¹

Active-Active PostgreSQL with AWS DMS: Full Load + CDC

February 27, 2025 · 3 min · 576 words · Sagar Nayak

January ¹

Add an A Record to Apex Domain on Route 53

January 12, 2025 · 3 min · 503 words · Sagar Nayak

2024 ⁵

December ¹

Deploy Angular to AWS S3 with GitHub Actions

December 18, 2024 · 1 min · 190 words · Sagar Nayak

November ¹

Deploy a Static HTML Site to AWS S3 with GitHub Actions

November 5, 2024 · 1 min · 161 words · Sagar Nayak

October ¹

Deploy Hugo to AWS S3 with GitHub Actions and CloudFront

October 22, 2024 · 1 min · 190 words · Sagar Nayak

September ¹

Cusdis Docker Setup for Hugo

September 8, 2024 · 1 min · 196 words · Sagar Nayak

August ¹

Delete Old GitHub Packages Versions with a Bash Script

August 15, 2024 · 2 min · 349 words · Sagar Nayak

2026 25

May 5

Deploying Sanchayam

Corporate Actions and the Backfill Pipeline

Friday Snapshots: Weekly Portfolio and Historical Backfill

XIRR from Scratch: Newton-Raphson on a Portfolio

FIFO Cost Basis and Realized P&L

April 5

Price Feed Queue: Providers, Routing, and Rate Limits

FX: USD Pivot, Two-Layer Cache, Stale-While-Revalidate

Auth: OTP Reset, Invite Signup, and Token Rotation

The Asset Schema: One Table for Every Asset Type

Sanchayam: A Self-Hosted Multi-Asset Portfolio Tracker

March 5

Deploying MediaBridge

Lambda Thumbnail Pipeline

S3 Archive Restore Automation

Global Cross-Bucket Search

Streaming DFS Search over WebSocket

February 5

The Two-Layer Cache Architecture

JWT Refresh Queue Pattern

Zero-Tolerance Security Model

Direct-to-S3 Upload with Presigned URLs

MediaBridge: Self-Hosted S3 File Management for Teams

January 5

Deploying PurelyManage: systemd, nginx, and S3 Frontend

imapsync Setup and the Async Job Architecture

Running IMAP Migration Jobs in PurelyManage

Collecting IMAP Credentials Without Storing Plaintext

DNS Health Monitoring Without Hammering the API

2025 21

December 5

Email User Management in PurelyManage

Adding and Verifying Domains in PurelyManage

Building Against an Undocumented API: PurelyMail

Rogue Admin Protection with a 24-Hour Deletion Queue

Storing Credentials Securely: AES-256-GCM and JWT

November 4

PurelyManage: Open-Source Admin Panel for PurelyMail

Telegram Attendance Tracker with n8n and Google Sheets

ESP32 Development Setup on Ubuntu

ESP32 WiFi Ping Server for On-Prem Power Monitoring

October 3

Mount AWS S3 as a Windows Drive with rclone

Error Handling in Spring Boot: Controllers vs Filters

FolderSync + AWS S3: Private Android Photo Backup

September 1

Security Setup in Spring Boot: CORS, JWT, and API Tiers

August 1

Expense Tracker (Part 5/5): Frontend

July 1

Expense Tracker (Part 4/5): Backend APIs

June 1

Expense Tracker (Part 3/5): AWS Setup

May 1

Expense Tracker (Part 2/5): Database Planning

April 1

Expense Tracker (Part 1/5): Introduction

March 1

Multi-Region EC2 Routing with Session Pinning and JWT

February 1

Active-Active PostgreSQL with AWS DMS: Full Load + CDC

January 1

Add an A Record to Apex Domain on Route 53

2024 5

December 1

Deploy Angular to AWS S3 with GitHub Actions

November 1

Deploy a Static HTML Site to AWS S3 with GitHub Actions

October 1

Deploy Hugo to AWS S3 with GitHub Actions and CloudFront

September 1

Cusdis Docker Setup for Hugo

August 1

Delete Old GitHub Packages Versions with a Bash Script

2026 ²⁵

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February ⁵

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2025 ²¹

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