redis: higher limit of open files

CHANGELOG.md

@@ -17,6 +17,7 @@ The **patch** part changes incrementally at each release.
 ### Changed
 * evolinux-base: remove apt-listchanges on Stretch and later
 * redis: set variables on nclusion, not with set_facts
+* redis: higher limit of open files
 * tomcat: better tomcat version management
 
 ### Fixed

redis/files/redis-server@.service

@@ -13,6 +13,7 @@ ExecStop=/usr/bin/redis-cli -s /run/redis/%i/redis.sock shutdown
 Restart=always
 User=redis-%i
 Group=redis-%i
+LimitNOFILE=65535
 
 [Install]
 WantedBy=multi-user.target