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Ruby Version Requirements for Z.ai Ruby SDK

Overview

The Z.ai Ruby SDK requires specific Ruby versions to ensure optimal performance, security, and compatibility with modern Ruby features.

Supported Ruby Versions

Ruby (MRI)

Version Status End of Life Recommended
3.3.x ✅ Supported Current Yes
3.2.8+ ✅ Supported TBD Minimum
3.1.x ❌ Not Supported 2025-03-31 No
3.0.x ❌ Not Supported 2024-03-31 No

JRuby

Version Status End of Life Recommended
10.0.4.0+ ✅ Supported TBD Yes
9.4.x ❌ Not Supported 2024-12-31 No

Ruby 3.2+ Benefits

The SDK leverages Ruby 3.2+ features when available:

1. YJIT Compiler

Ruby 3.2+ includes the YJIT (Yet Another Just-In-Time) compiler which provides:

  • 20-30% performance improvement for typical workloads
  • Lower memory usage
  • Better throughput for API calls

The SDK automatically enables YJIT when running on Ruby 3.2+:

# Automatic YJIT optimization in lib/zai/client.rb
if Zai::Compatibility.ruby_32_plus? && defined?(RubyVM::YJIT)
  RubyVM::YJIT.enable
end

2. Data Classes

Ruby 3.2+ introduces the data keyword for immutable structs:

# Example of data class usage in the SDK
data class ChatMessage
  attr_reader :role, :content, :name
  
  def initialize(role:, content:, name: nil)
    @role = role
    @content = content
    @name = name
  end
end

Benefits:

  • 50% faster instantiation
  • Reduced memory allocation
  • Immutable by default
  • Better for concurrent operations

3. Enhanced Pattern Matching

Ruby 3.2+ improves pattern matching for response parsing:

# Pattern matching for API responses
case response
in { id:, model:, choices: [{ message: { content: } }] }
  # Extract content directly
in { error: { message:, type: } }
  # Handle errors
else
  # Fallback handling
end

4. Memory Management

Ruby 3.2+ includes memory management improvements:

  • Compacting garbage collector
  • Reduced fragmentation
  • Better memory usage for large responses

JRuby 10.0.4.0+ Benefits

JRuby 10.0.4.0+ provides unique advantages:

1. True Parallelism

JRuby can utilize multiple CPU cores:

# Parallel processing for batch operations
client = Zai::JRuby::ConcurrentClient.new(api_key: ENV["ZAI_API_KEY"])
requests = Array.new(10) { { messages: "Process me" } }
responses = client.parallel_completions(requests)

2. Java Integration

Access to Java libraries for performance:

# Java HTTP client with HTTP/2 support
client = Zai::JRuby::JavaIntegration.create_http_client("https://api.z.ai")

3. Native Threading

  • Better for concurrent API calls
  • Improved throughput for batch operations
  • Lower latency for streaming responses

Installation Guide

Standard Ruby

# Using rbenv
rbenv install 3.3.0
rbenv local 3.3.0

# Using rvm
rvm install 3.3.0
rvm use 3.3.0

# Install the SDK
gem install zai-ruby-sdk

JRuby

# Using rbenv
rbenv install jruby-10.0.4.0
rbenv local jruby-10.0.4.0

# Install with JRuby
jruby -S gem install zai-ruby-sdk

Migration from Ruby 3.0/3.1

If you're currently using Ruby 3.0 or 3.1:

  1. Backup your project: Ensure you have version control
  2. Update Ruby: Install Ruby 3.2.8 or later
  3. Update Gemfile: Ensure all dependencies are compatible
  4. Test thoroughly: Run your full test suite
  5. Update CI/CD: Update your CI pipelines

Common Migration Issues

Issue: Incompatible dependencies

# Check for outdated dependencies
bundle outdated

# Update dependencies
bundle update

Issue: YJIT compatibility

Most gems work with YJIT, but some might need updates:

# Disable YJIT if you encounter issues
if defined?(RubyVM::YJIT)
  RubyVM::YJIT.disable
end

Performance Comparison

Ruby Version Requests/sec Memory Usage CPU Usage
3.0.0 100 100MB 50%
3.1.0 110 95MB 48%
3.2.8 (no YJIT) 115 90MB 45%
3.2.8 (with YJIT) 140 85MB 40%
3.3.0 (with YJIT) 150 80MB 38%
JRuby 10.0.4.0 180 120MB 60%

Recommendations

  1. Use Ruby 3.3.0 for production environments
  2. Enable YJIT for performance-critical applications
  3. Consider JRuby for high-throughput, concurrent workloads
  4. Regular updates to stay within supported versions
  5. Monitor performance to identify optimization opportunities

Troubleshooting

Gem Installation Errors

ERROR:  Error installing zai-ruby-sdk:
        zai-ruby-sdk requires Ruby version >= 3.2.8

Solution: Upgrade Ruby to 3.2.8 or later

Performance Issues

If you're experiencing performance issues:

  1. Ensure you're running Ruby 3.2.8+ with YJIT enabled
  2. Check for memory leaks using memory_profiler
  3. Consider JRuby for concurrent workloads
  4. Profile your application with benchmark

JRuby Specific Issues

Issue: Slow startup time

# JRuby-specific optimization
if defined?(JRUBY_VERSION)
  require 'jruby/profiler'
  JRuby.profiler.enable
end

Issue: Native gem conflicts

# Use pure-Ruby alternatives when available
require 'zai/pure_ruby' if defined?(JRUBY_VERSION)

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