REDIS PowerUser Guide (PowerShell)

# Network
bind 127.0.0.1
port 6379
timeout 300

# Memory management
maxmemory 2gb
maxmemory-policy allkeys-lru

# Persistence (RDB)
save 900 1
save 300 10
save 60 10000
dir C:/Redis/data
dbfilename dump.rdb

# Append-only file (AOF)
appendonly yes
appendfilename "appendonly.aof"
appendfsync everysec

# Slow log
slowlog-log-slower-than 10000
slowlog-max-len 128

# Security
requirepass StrongPassword123!

rename-command FLUSHDB ""
rename-command FLUSHALL ""
rename-command CONFIG "CONFIG_8d7a9f2b"
rename-command SHUTDOWN "SHUTDOWN_5c4e1d3f"

# Install via Chocolatey
choco install redis-64 -y

# Or download manually
$redisUrl = "https://github.com/microsoftarchive/redis/releases/download/win-3.2.100/Redis-x64-3.2.100.zip"
$downloadPath = "$env:TEMP\redis.zip"
$installPath = "C:\Redis"

Invoke-WebRequest -Uri $redisUrl -OutFile $downloadPath
Expand-Archive -Path $downloadPath -DestinationPath $installPath

# Create data directory
New-Item -ItemType Directory -Path "C:\Redis\data" -Force

# Configure redis.windows.conf
$config = @"
bind 127.0.0.1
port 6379
timeout 300
maxmemory 2gb
maxmemory-policy allkeys-lru
save 900 1
save 300 10
save 60 10000
dir C:/Redis/data
dbfilename dump.rdb
requirepass StrongPassword123!
"@
Set-Content -Path "C:\Redis\redis.windows.conf" -Value $config

# Install as Windows service
cd C:\Redis
.\redis-server.exe --service-install redis.windows.conf --service-name Redis

# Start service
Start-Service Redis

# Verify service
Get-Service Redis | Select-Object Name, Status, StartType

# Test connection
redis-cli -a StrongPassword123! ping

# Set password for authentication
$env:REDISCLI_AUTH = "StrongPassword123!"

# String operations
redis-cli SET user:1:name "John Doe"
redis-cli GET user:1:name
redis-cli INCR counter
redis-cli INCRBY counter 5
redis-cli SETEX session:token "3600" "abc123xyz"  # Expire in 1 hour

# List operations
redis-cli LPUSH queue:tasks "task1"
redis-cli RPUSH queue:tasks "task2" "task3"
redis-cli LRANGE queue:tasks 0 -1
redis-cli LPOP queue:tasks
redis-cli LLEN queue:tasks

# Set operations
redis-cli SADD tags:post1 "redis" "database" "nosql"
redis-cli SMEMBERS tags:post1
redis-cli SISMEMBER tags:post1 "redis"
redis-cli SINTER tags:post1 tags:post2

# Hash operations
redis-cli HSET user:1 name "John" email "john@example.com" age 30
redis-cli HGET user:1 name
redis-cli HGETALL user:1
redis-cli HINCRBY user:1 age 1

# Sorted Set operations
redis-cli ZADD leaderboard 100 "player1" 200 "player2" 150 "player3"
redis-cli ZRANGE leaderboard 0 -1 WITHSCORES
redis-cli ZREVRANGE leaderboard 0 2 WITHSCORES
redis-cli ZRANK leaderboard "player1"

# Key management
redis-cli EXISTS user:1:name
redis-cli DEL user:1:name
redis-cli EXPIRE session:token 3600
redis-cli TTL session:token
redis-cli KEYS "user:*"  # Use SCAN in production

# Publisher script (publisher.ps1)
$config = @"
`$env:REDISCLI_AUTH = 'StrongPassword123!'
while (`$true) {
    `$message = Read-Host 'Enter message (or quit to exit)'
    if (`$message -eq 'quit') { break }
    redis-cli PUBLISH news `$message
}
"@
Set-Content -Path "publisher.ps1" -Value $config

# Subscriber script (subscriber.ps1)
$config = @"
`$env:REDISCLI_AUTH = 'StrongPassword123!'
Write-Host 'Subscribing to news channel...'
redis-cli SUBSCRIBE news
"@
Set-Content -Path "subscriber.ps1" -Value $config

# Run subscriber in separate window
Start-Process powershell -ArgumentList "-NoExit", "-File", "subscriber.ps1"

# Run publisher
.\publisher.ps1

# Pattern-based subscription
redis-cli PSUBSCRIBE "event:*"

# Unsubscribe
redis-cli UNSUBSCRIBE news
redis-cli PUNSUBSCRIBE "event:*"

# Pipelining example - execute multiple commands in batch
$commands = @"
SET key1 value1
SET key2 value2
GET key1
GET key2
INCR counter
INCR counter
"@
$commands | redis-cli -a StrongPassword123! --pipe

# Transaction example with MULTI/EXEC
$transaction = @"
MULTI
SET account:1:balance 1000
SET account:2:balance 500
DECRBY account:1:balance 100
INCRBY account:2:balance 100
EXEC
"@
$transaction | redis-cli -a StrongPassword123!

# Watch for optimistic locking
redis-cli -a StrongPassword123! << 'EOF'
WATCH balance
balance=$(redis-cli GET balance)
new_balance=$((balance + 100))
MULTI
SET balance $new_balance
EXEC
EOF

# Trigger manual RDB snapshot
redis-cli -a StrongPassword123! SAVE  # Blocking
redis-cli -a StrongPassword123! BGSAVE  # Background

# Check last save time
redis-cli -a StrongPassword123! LASTSAVE

# Get RDB save configuration
redis-cli -a StrongPassword123! CONFIG GET save

# Modify save intervals
redis-cli -a StrongPassword123! CONFIG SET save "900 1 300 10 60 10000"
redis-cli -a StrongPassword123! CONFIG REWRITE

# AOF rewrite (compaction)
redis-cli -a StrongPassword123! BGREWRITEAOF

# Backup RDB file
$timestamp = Get-Date -Format "yyyyMMdd_HHmmss"
Copy-Item "C:\Redis\data\dump.rdb" -Destination "C:\Backups\redis\dump_$timestamp.rdb"

# Backup AOF file
Copy-Item "C:\Redis\data\appendonly.aof" -Destination "C:\Backups\redis\appendonly_$timestamp.aof"

# Automated backup script
$script = @"
`$timestamp = Get-Date -Format 'yyyyMMdd_HHmmss'
`$backupDir = 'C:\Backups\redis'
New-Item -ItemType Directory -Path `$backupDir -Force

# Trigger background save
redis-cli -a StrongPassword123! BGSAVE

# Wait for save to complete
Start-Sleep -Seconds 5

# Copy files
Copy-Item 'C:\Redis\data\dump.rdb' -Destination "`$backupDir\dump_`$timestamp.rdb"
Copy-Item 'C:\Redis\data\appendonly.aof' -Destination "`$backupDir\appendonly_`$timestamp.aof"

# Retention: Delete backups older than 7 days
Get-ChildItem `$backupDir -File | Where-Object { `$_.LastWriteTime -lt (Get-Date).AddDays(-7) } | Remove-Item

Write-Host 'Backup completed: `$timestamp'
"@
Set-Content -Path "C:\Scripts\redis-backup.ps1" -Value $script

# Schedule backup (daily at 2 AM)
$action = New-ScheduledTaskAction -Execute "PowerShell.exe" -Argument "-File C:\Scripts\redis-backup.ps1"
$trigger = New-ScheduledTaskTrigger -Daily -At 2am
Register-ScheduledTask -Action $action -Trigger $trigger -TaskName "Redis Daily Backup" -Description "Daily Redis backup"

# Get server info
redis-cli -a StrongPassword123! INFO

# Get specific info sections
redis-cli -a StrongPassword123! INFO server
redis-cli -a StrongPassword123! INFO memory
redis-cli -a StrongPassword123! INFO stats
redis-cli -a StrongPassword123! INFO replication

# Monitor commands in real-time
redis-cli -a StrongPassword123! MONITOR

# Get slow log entries
redis-cli -a StrongPassword123! SLOWLOG GET 10

# Get client list
redis-cli -a StrongPassword123! CLIENT LIST

# Get memory usage
redis-cli -a StrongPassword123! MEMORY STATS

# Get database key statistics
redis-cli -a StrongPassword123! DBSIZE
redis-cli -a StrongPassword123! INFO keyspace

# Continuous monitoring script
$script = @"
while (`$true) {
    Clear-Host
    Write-Host '=== Redis Monitoring ===' -ForegroundColor Cyan
    Write-Host ''

    # Memory usage
    `$memInfo = redis-cli -a StrongPassword123! INFO memory | Select-String 'used_memory_human|maxmemory_human'
    Write-Host 'Memory:' -ForegroundColor Yellow
    `$memInfo
    Write-Host ''

    # Connected clients
    `$clients = redis-cli -a StrongPassword123! INFO clients | Select-String 'connected_clients'
    Write-Host 'Clients:' -ForegroundColor Yellow
    `$clients
    Write-Host ''

    # Keyspace
    `$keyspace = redis-cli -a StrongPassword123! INFO keyspace
    Write-Host 'Keyspace:' -ForegroundColor Yellow
    `$keyspace
    Write-Host ''

    # Stats
    `$stats = redis-cli -a StrongPassword123! INFO stats | Select-String 'total_commands_processed|total_connections_received'
    Write-Host 'Stats:' -ForegroundColor Yellow
    `$stats

    Start-Sleep -Seconds 2
}
"@
Set-Content -Path "C:\Scripts\redis-monitor.ps1" -Value $script

# Run monitor
# .\redis-monitor.ps1

# redis.windows.conf
maxmemory 2gb
maxmemory-policy allkeys-lru
maxmemory-samples 5

# Use efficient data structures
hash-max-ziplist-entries 512
hash-max-ziplist-value 64
list-max-ziplist-size -2
set-max-intset-entries 512
zset-max-ziplist-entries 128
zset-max-ziplist-value 64

# RDB - less frequent saves for better performance
save 900 1
save 300 10
save 60 10000

# AOF - balance between durability and performance
appendonly yes
appendfsync everysec  # Options: always, everysec, no
no-appendfsync-on-rewrite no
auto-aof-rewrite-percentage 100
auto-aof-rewrite-min-size 64mb

# Instead of multiple individual commands
$commands = 1..1000 | ForEach-Object { "SET key:$_ value$_" }
$commands -join "`n" | redis-cli --pipe

# Get latency statistics
redis-cli -a StrongPassword123! --latency
redis-cli -a StrongPassword123! --latency-history

# Get intrinsic latency
redis-cli -a StrongPassword123! --intrinsic-latency 100

# Benchmark Redis performance
redis-benchmark -a StrongPassword123! -t set,get -n 100000 -q

# Monitor hit rate
redis-cli -a StrongPassword123! INFO stats | Select-String "keyspace_hits|keyspace_misses"