Adds case study: Redis.md

[AngelosZar]

Edits case study: Redis.md

1. Introduction - Expanded to include more specific details about Redis's capabilities and enterprise adoption.

2. Brief History - Added additional milestones:

• 2012: VMware acquisition
• 2013: Cluster specification introduction
• 2021: Sanfilippo's departure
• 2022: Industry dominance mention

3. Features Section

• Reorganised into clearer categories
• Added "Reliability Features" section
• Enhanced "Scalability & Distribution" details

4. New Sections Added:

• Performance Optimization
• Security Best Practices
• More detailed Installation instructions
• Expanded VSCode integration guide

5. Table Changes

• Fixed formatting issues
• Added more detailed descriptions
• Improved column alignment

6. References - Added new resources:

• Redis free course
• Configuration articles
• Security best practices guide
• Updated documentation links

7. Case Studies

• Added specific examples (Adobe, Twitter, Instagram, GitHub)
• More detailed success story implementations

[jaaneh]

Hi. Could you clean up the changed files, and uninstall the redis package, as well as removing any files not related to the case study? I.e package-lock, gitignore

Please also don't remove other student's credit in the frontmatter, and instead add your own at the end of theirs so both of you keep your credits :)

---
title: Redis Case Study
author: Tord Åke Larsson <lordaake>, Angelos Zaros <AngelosZar>
tags: redis, case study, in-memory database, technology, implementation guide
---

Once that's done, I can merge your PR.