refactor: migrate Redis cache implementation to Valkey with enhanced configurability

Replaced Redis with Valkey as the caching backend across infrastructure and application modules. Updated configurations, templates, and health checks to reflect Valkey-specific parameters. Improved compatibility with enhanced configurability, including max memory and memory eviction policy settings.

config/docker/valkey/valkey.conf

@@ -1,6 +1,6 @@
-# Redis Production Configuration
+# Valkey Production Configuration
 # =============================================================================
-# This configuration file contains production-ready settings for Redis
+# This configuration file contains production-ready settings for Valkey
 # with security, performance, and reliability optimizations.
 # =============================================================================
 
@@ -78,10 +78,10 @@ rename-command DEBUG ""
 # TLS Configuration (uncomment and configure for TLS)
 # port 0
 # tls-port 6380
-# tls-cert-file /tls/redis.crt
-# tls-key-file /tls/redis.key
+# tls-cert-file /tls/valkey.crt
+# tls-key-file /tls/valkey.key
 # tls-ca-cert-file /tls/ca.crt
-# tls-dh-params-file /tls/redis.dh
+# tls-dh-params-file /tls/valkey.dh
 # tls-protocols "TLSv1.2 TLSv1.3"
 # tls-ciphers "ECDHE+AESGCM:ECDHE+CHACHA20:DHE+AESGCM:DHE+CHACHA20:!aNULL:!MD5:!DSS"
 # tls-ciphersuites "TLS_AES_256_GCM_SHA384:TLS_CHACHA20_POLY1305_SHA256:TLS_AES_128_GCM_SHA256"
@@ -116,7 +116,7 @@ client-query-buffer-limit 1gb
 # Protocol Buffer
 proto-max-bulk-len 512mb
 
-# Replication (for Redis cluster/replica setup)
+# Replication (for Valkey cluster/replica setup)
 # replica-serve-stale-data yes
 # replica-read-only yes
 # repl-diskless-sync no
@@ -144,6 +144,6 @@ rdb-save-incremental-fsync yes
 # Jemalloc Configuration
 jemalloc-bg-thread yes
 
-# Threading (Redis 6.0+)
-# io-threads 4
-# io-threads-do-reads yes
+# Threading (Valkey 6.0+)
+io-threads 4
+io-threads-do-reads yes