---
title: "Surya Sathi (@surya-sathi) | Hashnode"
description: "Skadoosh! Read the latest articles by Surya Sathi on Hashnode."
url: "https://hashnode.com/@surya-sathi"
---

@surya-sathi

# Surya Sathi

@surya-sathi · Joined December 2025

Skadoosh!

### [Consistency Models](https://systems-notes.hashnode.dev/consistency-models?utm_source=hashnode&utm_medium=feed)

What Systems Actually Promise

8 min read · [systems-notes.hashnode.dev](https://systems-notes.hashnode.dev/consistency-models?utm_source=hashnode&utm_medium=feed)

[Feb 8](https://hashnode.com/posts/consistency-models/6988d647a5a39f20c3a5792b)

### [Exactly-Once Delivery is Impossible](https://systems-notes.hashnode.dev/exactly-once-delivery-is-impossible?utm_source=hashnode&utm_medium=feed)

Exactly-Once Effects are not

8 min read · [systems-notes.hashnode.dev](https://systems-notes.hashnode.dev/exactly-once-delivery-is-impossible?utm_source=hashnode&utm_medium=feed)

[Feb 1](https://hashnode.com/posts/exactly-once-delivery-is-impossible/697f9bd04ee8a2bf3c367886)

### [Idempotency](https://systems-notes.hashnode.dev/idempotency?utm_source=hashnode&utm_medium=feed)

Making Systems Correct Under Retries and Concurrency

10 min read · [systems-notes.hashnode.dev](https://systems-notes.hashnode.dev/idempotency?utm_source=hashnode&utm_medium=feed)

[Jan 26](https://hashnode.com/posts/idempotency/697709f61c5ccfad21f2f449)

### [Why Distributed Systems Can't Know What's Happening](https://systems-notes.hashnode.dev/why-distributed-systems-cant-know-whats-happening?utm_source=hashnode&utm_medium=feed)

Uncertainty, Timeouts, Retries and Side Effects

10 min read · [systems-notes.hashnode.dev](https://systems-notes.hashnode.dev/why-distributed-systems-cant-know-whats-happening?utm_source=hashnode&utm_medium=feed)

[Jan 19](https://hashnode.com/posts/why-distributed-systems-cant-know-whats-happening/696dcf9ee3b92294e7a23aeb)

### [Caching: Performance vs Consistency](https://systems-notes.hashnode.dev/caching-performance-vs-consistency?utm_source=hashnode&utm_medium=feed)

Every computing system, no matter how low level or high level, is constrained by the same fundamental problem: fetching data takes time. Computation itself is fast, but fetching data is slow. A modern

11 min read · [systems-notes.hashnode.dev](https://systems-notes.hashnode.dev/caching-performance-vs-consistency?utm_source=hashnode&utm_medium=feed)

[Jan 12](https://hashnode.com/posts/caching-performance-vs-consistency/69649519d92154cd6948d722)