redis migration

Signed-off-by: ale <ale@manalejandro.com>

CHANGELOG.md

@@ -17,7 +17,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Copy to clipboard functionality for all hash values
 
 #### Backend
-- Elasticsearch integration with configurable endpoint
+- Redis integration with ioredis
 - Custom index mapping with 10 shards for horizontal scaling
 - Automatic index creation on first use
 - Auto-indexing of searched plaintext for future lookups
@@ -62,7 +62,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 #### Dependencies
 - Next.js 16.0.7
 - React 19.2.0
-- Elasticsearch Client 8.x
+- ioredis 5.4.2
 - Lucide React (icons)
 - Tailwind CSS 4.x
 - TypeScript 5.x
@@ -75,14 +75,14 @@ hasher/
 │   ├── layout.tsx         # Root layout
 │   └── page.tsx           # Main page
 ├── lib/                   # Utility libraries
-│   ├── elasticsearch.ts   # ES client
+│   ├── redis.ts           # Redis client
 │   └── hash.ts           # Hash utilities
 ├── scripts/              # CLI scripts
 │   └── index-file.ts     # Bulk indexer
 └── docs/                 # Documentation
 ```
 
-#### Elasticsearch Index Schema
+#### Redis Data Structure
 - Index name: `hasher`
 - Shards: 10
 - Replicas: 1
@@ -91,7 +91,9 @@ hasher/
 ### Configuration
 
 #### Environment Variables
-- `ELASTICSEARCH_NODE`: Elasticsearch endpoint (default: http://localhost:9200)
+- `REDIS_HOST`: Redis server host (default: localhost)
+- `REDIS_PORT`: Redis server port (default: 6379)
+- `REDIS_PASSWORD`: Redis authentication password (optional)
 
 #### Performance
 - Bulk indexing: 1000-5000 docs/sec