---
title: "Discussion on \"Copy on Write (CoW) vs Merge on Read (MoR)\" | Hashnode"
description: "Discussion on \"Copy on Write (CoW) vs Merge on Read (MoR)\". Apache Hudi provides two storage modes for managing updates and deletes in data lakes:\n\nCopy-on-Write (CoW) – Optimized for read performance, but slower writes.\n\nMerge-on-Read (MoR) – Optimized for write performance, but read queries require merging...."
url: "https://hashnode.com/posts/copy-on-write-cow-vs-merge-on-read-mor/67eb2ffa3b30df8fda7b3927"
---

[Feed](https://hashnode.com/feed) /

Discussion

# [Copy on Write (CoW) vs Merge on Read (MoR)](https://blog.rajumandal.com.np/copy-on-write-cow-vs-merge-on-read-mor?utm_source=hashnode&utm_medium=feed)

Apache Hudi provides two storage modes for managing updates and deletes in data lakes: Copy-on-Write (CoW) – Optimized for read performance, but slower writes. Merge-on-Read (MoR) – Optimized for write performance, but read queries require merging....

Nov 1, 2024 · 5 min read · blog.rajumandal.com.np  
Read the article

-   [#apache-hudi](https://hashnode.com/tag/apache-hudi)

## Written by

[Raju Mandal](https://hashnode.com/@rajumandal)

@rajumandal

  
[View profile](https://hashnode.com/@rajumandal)

Data Platform Engineer/Architect

A digital entrepreneur, actively working as a data platform consultant. A seasoned data engineer/architect with an experience of Fintech & Telecom industry and a passion for data monetization and a penchant for navigating the intricate realms of multi-cloud data solutions.

## Responses

Markdown supported · ⌘↵ to post

No responses yet.