🔥 Tremora del Terra: ultimate hmac-file-server fix – final push before the drop 💾🔐

DEDUPLICATION_1GB_OPTIMIZATION.md

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-# Deduplication Optimization - 1GB Threshold
-
-## Updated Configuration
-
-### Production Setting Applied
-```toml
-[deduplication]
-maxsize = "1GB"          # Files larger than 1GB skip deduplication
-enabled = true
-directory = "/opt/hmac-file-server/data/dedup"
-```
-
-## Performance Impact
-
-### File Processing Logic
-- **Small files (< 1GB)**: Get deduplication with SHA256 hash computation
-- **Large files (≥ 1GB)**: Skip deduplication entirely, upload at network speed
-- **Most video files**: Will now bypass the hash computation that caused "endless encryption"
-
-### Why 1GB is Optimal
-1. **Covers most media files**: Most video files, even high-quality ones, are under 1GB
-2. **Still enables deduplication**: Smaller files (documents, images, small videos) still benefit
-3. **Eliminates bottlenecks**: Very large files upload without processing delays
-4. **Storage efficiency**: Deduplication remains active for the majority of files
-
-## Expected Results
-
-### Before (with no size limit)
-```
-970MB video file upload:
-1. Network transfer: ~30 seconds (depends on connection)
-2. SHA256 computation: 2-5 minutes (CPU intensive)
-3. Total time: 2.5-5.5 minutes + "endless encryption" appearance
-```
-
-### After (with 1GB limit)  
-```
-970MB video file upload:
-1. Network transfer: ~30 seconds
-2. SHA256 computation: SKIPPED
-3. Total time: ~30 seconds + immediate completion
-```
-
-### Larger files (>1GB)
-```
-Any file >1GB:
-- Bypasses deduplication completely
-- Uploads at pure network speed
-- No processing delays
-- Immediate completion
-```
-
-## Client Behavior Improvement
-
-### XMPP Clients (Gajim, Dino, Conversations)
-- **Before**: Progress bar stuck on "encryption" for minutes
-- **After**: Smooth progress at actual upload speed
-- **User Experience**: Upload completes as expected without delays
-
-### File Types Affected
-- **Videos (.mp4, .mkv, .avi, .mov)**: Major improvement for files approaching 1GB
-- **Large archives (.zip, .tar, .7z)**: Faster uploads for big archives
-- **ISO files**: No more delays on large disc images
-- **High-res media**: Large photo/video collections upload quickly
-
-## System Status
-
-✅ **Production Server**: Updated and running with 1GB threshold  
-✅ **Docker Config**: Updated to match production settings  
-✅ **nginx Timeouts**: Already configured for large file support (4800s)  
-✅ **ClamAV**: Disabled to avoid scanning delays  
-✅ **Upload Limits**: 10GB maximum file size supported  
-
-## Monitoring
-
-The system is ready for immediate testing. Your large video files should now upload without the "endless encryption" delays you experienced before.
-
----
-*Configuration Applied: $(date)*  
-*Deduplication Threshold: 1GB*  
-*Status: Optimized for large file uploads*