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Illustration of a wall clock at 2:00 beside versioned policy cards v17 and v18 with a W+1 window token tag, above a stream of events

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Temporal versioning to stop config drift in stream processing
Portrait of Kalpesh Deo, Staff software engineer-II at One2N

Kalpesh Deo

Staff software engineer-II @One2N

How temporal versioning with effective-time configuration and window tokens stops configuration drift across tenant time zones, rollovers and event replay.

Cover illustration for Conway's Law as a lever to fix legacy architectures

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Conway's Law as a lever to fix legacy architectures
Portrait of Chinmay Naik, CEO at One2N

Chinmay Naik

CEO @One2N

Conway's law says architecture mirrors team communication. A shared policy database showed it; the Reverse Conway Maneuver helps refactor legacy systems.

Cover illustration for Git was not built for multiple AI agents. Worktrees fix that.

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Git was not built for multiple AI agents. Worktrees fix that.
Portrait of Srivatsa RV, SRE at One2N

Srivatsa RV

SRE @One2N

Portrait of Spandan Ghosh, Content at One2N

Spandan Ghosh

Content @One2N

Git worktrees for agentic development: give each AI coding agent its own folder and branch on one repo, so parallel chats stop fighting over one checkout.

Cover illustration for Spring Kafka batching: how we shot ourselves in the foot

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Spring Kafka batching: how we shot ourselves in the foot
Portrait of Mahesh Aravind, SDE at One2N

Mahesh Aravind

SDE @One2N

Spring Kafka batch listeners cost us non-blocking retries for a small throughput gain. How listener batching differs from producer batching, and the fix.

Cover illustration for Why your Architecture should start with Questions, not boxes

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Why your Architecture should start with Questions, not boxes
Portrait of Chinmay Naik, CEO at One2N

Chinmay Naik

CEO @One2N

Architecture should start with questions about volume, SLAs, budget, team skills and growth before anyone draws Kafka and microservices boxes on a diagram.

Cover illustration for A pragmatic guide to get started with OpenTelemetry

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A pragmatic guide to get started with OpenTelemetry
Portrait of Spandan Ghosh, Content at One2N

Spandan Ghosh

Content @One2N

A pragmatic OpenTelemetry guide for SREs: monitoring vs observability, logs, metrics and traces, OTel instrumentation, and strategies to migrate backends.

Cover illustration for Implementing secure error handling in Go for B2B SaaS applications

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Implementing secure error handling in Go for B2B SaaS applications
Portrait of Mohit Kumar, Software Engineer

Mohit Kumar

Software Engineer

Portrait of Jaideep Khandelwal, CTO at One2N

Jaideep Khandelwal

CTO @One2N

Secure error handling in Go microservices: a centralized error library replaced leaky stack traces and DB errors with structured, user-friendly responses.

Cover illustration for Exploring RAG: enhancing LLMs with external knowledge

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Exploring RAG: enhancing LLMs with external knowledge
Portrait of Harsh Mishra, SRE

Harsh Mishra

SRE

Portrait of Saurabh Hirani, Principal SRE at One2N

Saurabh Hirani

Principal SRE @One2N

Retrieval augmented generation (RAG) for engineers: LLM basics, where standalone models fall short, and the parts of a RAG app such as embeddings.

Cover illustration for How we used Fly.io to improve a Pipecat-AI chatbot

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How we used Fly.io to improve a Pipecat-AI chatbot
Portrait of Ajinkya Wadekar, SRE at One2N

Ajinkya Wadekar

SRE @One2N

Portrait of Spandan Ghosh, Content at One2N

Spandan Ghosh

Content @One2N

A Pipecat-AI chatbot on ECS hit limits at 10 to 15 chat rooms per task, and 6GB images slowed scale-up. How Fly.io machines spun from containers fixed it.

Cover illustration for Database schema migrations: a practical guide to managing schema changes

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Database schema migrations: a practical guide to managing schema changes
Portrait of Spandan Ghosh, Content at One2N

Spandan Ghosh

Content @One2N

Database schema migrations without manual steps: versioned migrations, running them in every deploy, and tools like Flyway, Liquibase and ORM migrations.

Cover illustration for Multi-tenant authorization in Go with Permify for B2B SaaS

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Multi-tenant authorization in Go with Permify for B2B SaaS
Portrait of Mohit Kumar, Software Engineer

Mohit Kumar

Software Engineer

Multi-tenant authorization in Go with Permify, an open-source Zanzibar-based engine: our RBAC model, the schema, and how services call Permify over gRPC.

Cover illustration for Making your Go CLI binaries self-updatable

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Making your Go CLI binaries self-updatable
Portrait of Sitaram Shelke, SRE

Sitaram Shelke

SRE

Make Go CLI binaries self-updatable without brew or apt: fetch the latest release, download the binary for the OS and architecture, and apply the update.

Cover illustration for AWS SSO with the Go SDK: making SSO auth work in Golang

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AWS SSO with the Go SDK: making SSO auth work in Golang
Portrait of Chinmay Somani, SRE

Chinmay Somani

SRE

Why AWS SSO profiles fail with the AWS SDK for Go v1, and the two fixes: change your ~/.aws/config, or upgrade to the v2 SDK.

Cover illustration for Mock API in microservices architecture

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Mock API in microservices architecture
Portrait of Kalpesh Deo, Staff software engineer-II at One2N

Kalpesh Deo

Staff software engineer-II @One2N

Mock APIs in microservices architecture: why running every dependent service locally slows developers down, and how mocks unblock local dev and testing.

Cover illustration for Homogenous build setups for local and CI workflows

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Homogenous build setups for local and CI workflows
Portrait of Sitaram Shelke, SRE

Sitaram Shelke

SRE

Homogenous build setups give local and CI one interface to build and test. How we used Makefiles and Bash with Jenkins so builds match everywhere.

Talks

Thumbnail for the talk Extreme Programming in the Age of AI | One2N Cursor Meetup Pune

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Extreme Programming in the Age of AI | One2N Cursor Meetup Pune
Portrait of Nilesh D, Software Engineer at One2N

Nilesh D

Software Engineer @One2N

Nilesh D at the first Cursor Meetup in Pune: how Extreme Programming principles level up dev workflows and integrate with AI tools like Cursor.

Thumbnail for the talk Optimizing Kafka Performance with Automated Benchmarks

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Optimizing Kafka Performance with Automated Benchmarks
Portrait of Kalpesh Deo, Staff software engineer-II at One2N

Kalpesh Deo

Staff software engineer-II @One2N

Kalpesh Deo shares how he benchmarked Kafka producers with kafka-producer-perf-test.sh and what the experiments revealed about performance tuning.

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