new redis migration

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

API.md

@@ -102,7 +102,7 @@ Content-Type: application/json
 }
 ```
 
-Note: When plaintext is provided, it is automatically indexed in Elasticsearch for future lookups.
+Note: When plaintext is provided, it is automatically stored in Redis for future lookups.
 
 #### Error Responses
 
@@ -113,7 +113,7 @@ Note: When plaintext is provided, it is automatically indexed in Elasticsearch f
 }
 ```
 
-**500 Internal Server Error** - Server or Elasticsearch error:
+**500 Internal Server Error** - Server or Redis error:
 ```json
 {
   "error": "Internal server error",
@@ -127,7 +127,7 @@ Note: When plaintext is provided, it is automatically indexed in Elasticsearch f
 
 **Endpoint**: `GET /api/health`
 
-**Description**: Check the health of the application and Elasticsearch connection.
+**Description**: Check the health of the application and Redis connection.
 
 #### Request
 
@@ -139,31 +139,28 @@ No parameters required.
 ```json
 {
   "status": "ok",
-  "elasticsearch": {
-    "cluster": "elasticsearch",
-    "status": "green"
+  "redis": {
+    "version": "7.2.0",
+    "memory": "1.5M",
+    "dbSize": 1542
   },
-  "index": {
-    "exists": true,
-    "name": "hasher",
-    "stats": {
-      "documentCount": 1542,
-      "indexSize": 524288
-    }
+  "stats": {
+    "count": 1542,
+    "size": 524288
   }
 }
 ```
 
-**Elasticsearch cluster status values**:
-- `green`: All primary and replica shards are active
-- `yellow`: All primary shards are active, but not all replicas
-- `red`: Some primary shards are not active
+**Redis status fields**:
+- `version`: Redis server version
+- `memory`: Memory used by Redis
+- `dbSize`: Total number of keys in database
 
 **Error** (503 Service Unavailable):
 ```json
 {
   "status": "error",
-  "error": "Connection refused to Elasticsearch"
+  "error": "Connection refused to Redis"
 }
 ```
 
@@ -179,7 +176,6 @@ The API automatically detects hash types based on length and format:
 | SHA1      | 40                | `^[a-f0-9]{40}$` |
 | SHA256    | 64                | `^[a-f0-9]{64}$` |
 | SHA512    | 128               | `^[a-f0-9]{128}$` |
-| Bcrypt    | 60                | `^\$2[abxy]\$` |
 
 Hashes are case-insensitive.
 
@@ -253,7 +249,7 @@ The API accepts requests from any origin by default. For production deployment,
 ## Notes
 
 - All timestamps are in ISO 8601 format
-- The API automatically creates the Elasticsearch index if it doesn't exist
-- Plaintext searches are automatically indexed for future lookups
+- The API automatically creates Redis keys with proper structure
+- Plaintext searches are automatically stored for future lookups
 - Searches are case-insensitive
 - Hashes must be valid hexadecimal strings