Working with Server Administration

1. Getting Server Time

Command	Returns
TIME	[unix-seconds, microseconds]

2. Getting Role Information

Command	Returns
ROLE	master/slave/sentinel + replication detail

3. Saving Database

Command	Description
SAVE	Synchronous snapshot BLOCKS
BGSAVE [SCHEDULE]	Background snapshot

4. Getting Last Save Time

Command	Returns
LASTSAVE	Unix timestamp of last successful save

5. Rewriting AOF

Command	Description
BGREWRITEAOF	Compact AOF in background

6. Syncing Data to Disk

Command	Description
WAITAOF 1 0 5000	Force local AOF fsync, wait up to 5s 7.2+
CONFIG SET appendfsync always	Per-write fsync

7. Shutting Down Server

Command	Description
SHUTDOWN [NOSAVE|SAVE] [NOW] [FORCE] [ABORT]	Graceful stop with optional snapshot
SHUTDOWN ABORT	Cancel in-progress shutdown 7.0+

8. Debugging Objects

Command	Returns
DEBUG OBJECT key	refcount, encoding, serializedlength, lru
OBJECT ENCODING key	Internal encoding (listpack/skiplist/...)
OBJECT REFCOUNT key	Shared object ref count

9. Setting Server Verbosity

Directive	Levels
loglevel	debug, verbose, notice, warning, nothing
logfile	Path; "" for stdout

10. Resetting Statistics

Command	Description
CONFIG RESETSTAT	Reset counters in INFO
RESET	Reset connection state (MULTI, SUB, tracking) 6.2+

11. Getting Command Info

Command	Description
COMMAND	Metadata for all commands
COMMAND INFO name [name ...]	Specific command details
COMMAND DOCS [name ...]	Documentation 7.0+
COMMAND COUNT	Total registered commands
COMMAND GETKEYS cmd args	Extract key names from a command

12. Using MODULE LOAD for Extensions

Command	Description
MODULE LOAD /path/to/mod.so [arg ...]	Load shared library
MODULE LOADEX path [CONFIG k v]* [ARGS a]*	Load with config 7.0+
MODULE LIST	Loaded modules
MODULE UNLOAD name	Unload module