Memcached

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Comprehensive memcached commands and workflows for system administration across all platforms.

Basic Commands

Command	Description
memcached --version	Show memcached version
memcached --help	Display help information
memcached init	Initialize memcached in current directory
memcached status	Check current status
memcached list	List available options
memcached info	Display system information
memcached config	Show configuration settings
memcached update	Update to latest version
memcached start	Start memcached service
memcached stop	Stop memcached service
memcached restart	Restart memcached service
memcached reload	Reload configuration

Installation

Linux/Ubuntu

# Package manager installation
sudo apt update
sudo apt install memcached

# Alternative installation
wget https://github.com/example/memcached/releases/latest/download/memcached-linux
chmod +x memcached-linux
sudo mv memcached-linux /usr/local/bin/memcached

# Build from source
git clone https://github.com/example/memcached.git
cd memcached
make && sudo make install

macOS

# Homebrew installation
brew install memcached

# MacPorts installation
sudo port install memcached

# Manual installation
curl -L -o memcached https://github.com/example/memcached/releases/latest/download/memcached-macos
chmod +x memcached
sudo mv memcached /usr/local/bin/

Windows

# Chocolatey installation
choco install memcached

# Scoop installation
scoop install memcached

# Winget installation
winget install memcached

# Manual installation
# Download from https://github.com/example/memcached/releases
# Extract and add to PATH

Configuration

Command	Description
memcached config show	Display current configuration
memcached config list	List all configuration options
memcached config set <key> <value>	Set configuration value
memcached config get <key>	Get configuration value
memcached config unset <key>	Remove configuration value
memcached config reset	Reset to default configuration
memcached config validate	Validate configuration file
memcached config export	Export configuration to file

Advanced Operations

File Operations

# Create new file/resource
memcached create <name>

# Read file/resource
memcached read <name>

# Update existing file/resource
memcached update <name>

# Delete file/resource
memcached delete <name>

# Copy file/resource
memcached copy <source> <destination>

# Move file/resource
memcached move <source> <destination>

# List all files/resources
memcached list --all

# Search for files/resources
memcached search <pattern>

Network Operations

# Connect to remote host
memcached connect <host>:<port>

# Listen on specific port
memcached listen --port <port>

# Send data to target
memcached send --target <host> --data "<data>"

# Receive data from source
memcached receive --source <host>

# Test connectivity
memcached ping <host>

# Scan network range
memcached scan <network>

# Monitor network traffic
memcached monitor --interface <interface>

# Proxy connections
memcached proxy --listen <port> --target <host>:<port>

Process Management

# Start background process
memcached start --daemon

# Stop running process
memcached stop --force

# Restart with new configuration
memcached restart --config <file>

# Check process status
memcached status --verbose

# Monitor process performance
memcached monitor --metrics

# Kill all processes
memcached killall

# Show running processes
memcached ps

# Manage process priority
memcached priority --pid <pid> --level <level>

Security Features

Authentication

# Login with username/password
memcached login --user <username>

# Login with API key
memcached login --api-key <key>

# Login with certificate
memcached login --cert <cert_file>

# Logout current session
memcached logout

# Change password
memcached passwd

# Generate new API key
memcached generate-key --name <key_name>

# List active sessions
memcached sessions

# Revoke session
memcached revoke --session <session_id>

Encryption

# Encrypt file
memcached encrypt --input <file> --output <encrypted_file>

# Decrypt file
memcached decrypt --input <encrypted_file> --output <file>

# Generate encryption key
memcached keygen --type <type> --size <size>

# Sign file
memcached sign --input <file> --key <private_key>

# Verify signature
memcached verify --input <file> --signature <sig_file>

# Hash file
memcached hash --algorithm <algo> --input <file>

# Generate certificate
memcached cert generate --name <name> --days <days>

# Verify certificate
memcached cert verify --cert <cert_file>

Monitoring and Logging

System Monitoring

# Monitor system resources
memcached monitor --system

# Monitor specific process
memcached monitor --pid <pid>

# Monitor network activity
memcached monitor --network

# Monitor file changes
memcached monitor --files <directory>

# Real-time monitoring
memcached monitor --real-time --interval 1

# Generate monitoring report
memcached report --type monitoring --output <file>

# Set monitoring alerts
memcached alert --threshold <value> --action <action>

# View monitoring history
memcached history --type monitoring

Logging

# View logs
memcached logs

# View logs with filter
memcached logs --filter <pattern>

# Follow logs in real-time
memcached logs --follow

# Set log level
memcached logs --level <level>

# Rotate logs
memcached logs --rotate

# Export logs
memcached logs --export <file>

# Clear logs
memcached logs --clear

# Archive logs
memcached logs --archive <archive_file>

Troubleshooting

Common Issues

Issue: Command not found

# Check if memcached is installed
which memcached
memcached --version

# Check PATH variable
echo $PATH

# Reinstall if necessary
sudo apt reinstall memcached
# or
brew reinstall memcached

Issue: Permission denied

# Run with elevated privileges
sudo memcached <command>

# Check file permissions
ls -la $(which memcached)

# Fix permissions
chmod +x /usr/local/bin/memcached

# Check ownership
sudo chown $USER:$USER /usr/local/bin/memcached

Issue: Configuration errors

# Validate configuration
memcached config validate

# Reset to default configuration
memcached config reset

# Check configuration file location
memcached config show --file

# Backup current configuration
memcached config export > backup.conf

# Restore from backup
memcached config import backup.conf

Issue: Service not starting

# Check service status
memcached status --detailed

# Check system logs
journalctl -u memcached

# Start in debug mode
memcached start --debug

# Check port availability
netstat -tulpn|grep <port>

# Kill conflicting processes
memcached killall --force

Debug Commands

Command	Description
memcached --debug	Enable debug output
memcached --verbose	Enable verbose logging
memcached --trace	Enable trace logging
memcached test	Run built-in tests
memcached doctor	Run system health check
memcached diagnose	Generate diagnostic report
memcached benchmark	Run performance benchmarks
memcached validate	Validate installation and configuration

Performance Optimization

Resource Management

# Set memory limit
memcached --max-memory 1G <command>

# Set CPU limit
memcached --max-cpu 2 <command>

# Enable caching
memcached --cache-enabled <command>

# Set cache size
memcached --cache-size 100M <command>

# Clear cache
memcached cache clear

# Show cache statistics
memcached cache stats

# Optimize performance
memcached optimize --profile <profile>

# Show performance metrics
memcached metrics

Parallel Processing

# Enable parallel processing
memcached --parallel <command>

# Set number of workers
memcached --workers 4 <command>

# Process in batches
memcached --batch-size 100 <command>

# Queue management
memcached queue add <item>
memcached queue process
memcached queue status
memcached queue clear

Integration

Scripting

#!/bin/bash
# Example script using memcached

set -euo pipefail

# Configuration
CONFIG_FILE="config.yaml"
LOG_FILE="memcached.log"

# Check if memcached is available
if ! command -v memcached &> /dev/null; then
    echo "Error: memcached is not installed" >&2
    exit 1
fi

# Function to log messages
log() \\\\{
    echo "$(date '+%Y-%m-%d %H:%M:%S') - $1"|tee -a "$LOG_FILE"
\\\\}

# Main operation
main() \\\\{
    log "Starting memcached operation"

    if memcached --config "$CONFIG_FILE" run; then
        log "Operation completed successfully"
        exit 0
    else
        log "Operation failed with exit code $?"
        exit 1
    fi
\\\\}

# Cleanup function
cleanup() \\\\{
    log "Cleaning up"
    memcached cleanup
\\\\}

# Set trap for cleanup
trap cleanup EXIT

# Run main function
main "$@"

API Integration

#!/usr/bin/env python3
"""
Python wrapper for the tool
"""

import subprocess
import json
import logging
from pathlib import Path
from typing import Dict, List, Optional

class ToolWrapper:
    def __init__(self, config_file: Optional[str] = None):
        self.config_file = config_file
        self.logger = logging.getLogger(__name__)

    def run_command(self, args: List[str]) -> Dict:
        """Run command and return parsed output"""
        cmd = ['tool_name']

        if self.config_file:
            cmd.extend(['--config', self.config_file])

        cmd.extend(args)

        try:
            result = subprocess.run(
                cmd,
                capture_output=True,
                text=True,
                check=True
            )
            return \\\\{'stdout': result.stdout, 'stderr': result.stderr\\\\}
        except subprocess.CalledProcessError as e:
            self.logger.error(f"Command failed: \\\\{e\\\\}")
            raise

    def status(self) -> Dict:
        """Get current status"""
        return self.run_command(['status'])

    def start(self) -> Dict:
        """Start service"""
        return self.run_command(['start'])

    def stop(self) -> Dict:
        """Stop service"""
        return self.run_command(['stop'])

# Example usage
if __name__ == "__main__":
    wrapper = ToolWrapper()
    status = wrapper.status()
    print(json.dumps(status, indent=2))

Environment Variables

Variable	Description	Default
MEMCACHED_CONFIG	Configuration file path	~/.memcached/config.yaml
MEMCACHED_HOME	Home directory	~/.memcached
MEMCACHED_LOG_LEVEL	Logging level	INFO
MEMCACHED_LOG_FILE	Log file path	~/.memcached/logs/memcached.log
MEMCACHED_CACHE_DIR	Cache directory	~/.memcached/cache
MEMCACHED_DATA_DIR	Data directory	~/.memcached/data
MEMCACHED_TIMEOUT	Default timeout	30s
MEMCACHED_MAX_WORKERS	Maximum workers	4

Configuration File

# ~/.memcached/config.yaml
version: "1.0"

# General settings
settings:
  debug: false
  verbose: false
  log_level: "INFO"
  log_file: "~/.memcached/logs/memcached.log"
  timeout: 30
  max_workers: 4

# Network configuration
network:
  host: "localhost"
  port: 8080
  ssl: true
  timeout: 30
  retries: 3

# Security settings
security:
  auth_required: true
  api_key: ""
  encryption: "AES256"
  verify_ssl: true

# Performance settings
performance:
  cache_enabled: true
  cache_size: "100M"
  cache_dir: "~/.memcached/cache"
  max_memory: "1G"

# Monitoring settings
monitoring:
  enabled: true
  interval: 60
  metrics_enabled: true
  alerts_enabled: true

Examples

Basic Workflow

# 1. Initialize memcached
memcached init

# 2. Configure basic settings
memcached config set host example.com
memcached config set port 8080

# 3. Start service
memcached start

# 4. Check status
memcached status

# 5. Perform operations
memcached run --target example.com

# 6. View results
memcached results

# 7. Stop service
memcached stop

Advanced Workflow

# Comprehensive operation with monitoring
memcached run \
  --config production.yaml \
  --parallel \
  --workers 8 \
  --verbose \
  --timeout 300 \
  --output json \
  --log-file operation.log

# Monitor in real-time
memcached monitor --real-time --interval 5

# Generate report
memcached report --type comprehensive --output report.html

Automation Example

#!/bin/bash
# Automated memcached workflow

# Configuration
TARGETS_FILE="targets.txt"
RESULTS_DIR="results/$(date +%Y-%m-%d)"
CONFIG_FILE="automation.yaml"

# Create results directory
mkdir -p "$RESULTS_DIR"

# Process each target
while IFS= read -r target; do
    echo "Processing $target..."

    memcached \
        --config "$CONFIG_FILE" \
        --output json \
        --output-file "$RESULTS_DIR/$\\\\{target\\\\}.json" \
        run "$target"

done < "$TARGETS_FILE"

# Generate summary report
memcached report summary \
    --input "$RESULTS_DIR/*.json" \
    --output "$RESULTS_DIR/summary.html"

Best Practices

Security

• Always verify checksums when downloading binaries
• Use strong authentication methods (API keys, certificates)
• Regularly update to the latest version
• Follow principle of least privilege
• Enable audit logging for compliance
• Use encrypted connections when possible
• Validate all inputs and configurations
• Implement proper access controls

Performance

• Use appropriate resource limits for your environment
• Monitor system performance regularly
• Optimize configuration for your use case
• Use parallel processing when beneficial
• Implement proper caching strategies
• Regular maintenance and cleanup
• Profile performance bottlenecks
• Use efficient algorithms and data structures

Operational

• Maintain comprehensive documentation
• Implement proper backup strategies
• Use version control for configurations
• Monitor and alert on critical metrics
• Implement proper error handling
• Use automation for repetitive tasks
• Regular security audits and updates
• Plan for disaster recovery

Development

• Follow coding standards and conventions
• Write comprehensive tests
• Use continuous integration/deployment
• Implement proper logging and monitoring
• Document APIs and interfaces
• Use version control effectively
• Review code regularly
• Maintain backward compatibility

Resources

Official Documentation

• Official Website
• Documentation
• API Reference
• Installation Guide
• Configuration Reference

Community Resources

• GitHub Repository
• Issue Tracker
• Community Forum
• Discord Server
• Reddit Community
• Stack Overflow

Learning Resources

• Getting Started Guide
• Tutorial Series
• Best Practices Guide
• Video Tutorials
• Training Courses
• Certification Program

Related Tools

• Git - Complementary functionality
• Docker - Alternative solution
• Kubernetes - Integration partner

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Last updated: 2025-07-06|Edit on GitHub