Backend Translation System

Tech Stack

• Django (Python)
• AWS S3
• Redis
• MySQL

---

Core Components

AWS S3

• Stores translation files
• Region-based + lab-specific

---

Redis Cache

• Stores translations in memory
• Reduces latency
• Avoids repeated S3 reads

---

Database

TranslationConfiguration Table

• Stores lab-specific metadata
• Contains has_custom_translations flag

---

Translation Fetch Logic

1. Check Redis cache

2. If hit → return

3. If miss:

   • Fetch from S3
   • Convert to hash map
   • Store in Redis

4. Merge translations

5. Return response

---

Data Structures

• Stored as hash maps
• Key → translation key
• Value → translated string

---

Performance Considerations

• Redis improves response time
• Reduces S3 dependency
• Scales with growing data