Gate vs LaunchDarkly: When Less is More

LaunchDarkly is the industry standard for feature flags. Enterprise-grade targeting, real-time updates, detailed analytics, integrations with everything. They’ve earned their reputation.

Gate is none of that. Boolean flags. Local evaluation. No dashboard beyond what you build yourself.

This isn’t a hit piece. LaunchDarkly is excellent at what it does. The question is whether what it does is what you need.

What LaunchDarkly Gives You

Targeting rules: Serve different flag values to different users based on attributes, segments, percentages, and combinations. Target by email domain, subscription tier, geographic region, or custom properties.

Real-time updates: Flag changes propagate in milliseconds. Flip a switch, see the change instantly across all clients.

Analytics: See which users are seeing which variations. Track flag usage over time. Understand the impact of your rollouts.

Experimentation: A/B test features with statistical significance. Measure conversion rates by variation.

Audit logs: Track who changed what flag when. Required for compliance in regulated industries.

Integrations: Connect to Slack, Jira, DataDog, and dozens of other tools.

If you need these things, use LaunchDarkly. Seriously. They’re good at it.

What LaunchDarkly Costs

Money: Plans start around $10/month per seat for small teams, scaling to enterprise pricing that can run $50k+/year for larger organizations. Feature flags become a line item in your infrastructure budget.

Complexity: The targeting rule interface has a learning curve. New team members need onboarding. The dashboard becomes another system to understand.

Latency (potentially): Real-time propagation requires maintaining connections to LaunchDarkly’s servers. In most setups, flag evaluation is still local and fast. But the synchronization overhead exists.

Vendor dependency: Your flag state lives in LaunchDarkly’s infrastructure. Outages affect your flag evaluations. The January 2024 incident was a reminder.

What Gate Gives You

Boolean flags: enabled: true or enabled: false. That’s it.

Local evaluation: SDK syncs flags periodically, evaluates in-memory. Zero network calls during evaluation.

Edge deployment: Flag storage on Cloudflare KV. Global latency, no central point of failure.

Unified billing: Same API key as Meter, Relay, and Witness. One vendor for edge infrastructure primitives.

Predictability: Pay per sync, not per seat or per evaluation. Usage-based pricing that scales linearly.

What Gate Doesn’t Give You

No targeting: Every user sees the same flag value. If you need “enabled for 10% of users in the US,” Gate can’t help.

No real-time: Flag changes propagate on the next sync, typically 30-60 seconds. Not suitable for instant kill switches.

No dashboard: Gate is API-only. You build your own flag management UI or use curl.

No analytics: Gate doesn’t track who saw what. You instrument that yourself if needed.

No experimentation: For A/B testing, use a proper experimentation platform.

Decision Framework

Choose LaunchDarkly when:

• You have dedicated platform/infrastructure teams who will manage flags
• You need percentage rollouts for gradual releases
• You’re in a regulated industry requiring audit trails
• You’re running real experiments that need statistical analysis
• Your team is large enough that dashboard collaboration matters
• Budget for developer tools is not a primary concern

Choose Gate when:

• You ship features behind flags and enable when ready
• Your flags are mostly on/off, not user-targeted
• You want kill switches that don’t add latency
• You’re a small team where everyone knows the flags
• You prefer infrastructure as code over dashboards
• You’re already using Solenoid for metering or webhooks

The Hybrid Approach

Some teams use both. LaunchDarkly for customer-facing feature rollouts where targeting matters. Gate for internal operational flags where simplicity wins.

// Complex rollout: LaunchDarkly
const showNewPricing = ldClient.variation('new-pricing', user, false)

// Simple kill switch: Gate
const paymentsEnabled = gate.isEnabled('payments_enabled')

Different tools for different jobs. Not every flag needs enterprise capabilities.

Migration Path

If you’re on LaunchDarkly and considering Gate for some flags, the SDK patterns are similar:

// LaunchDarkly
const value = await ldClient.variation('flag-key', user, defaultValue)

// Gate
await gate.sync()
const value = gate.isEnabled('flag-key') ?? defaultValue

The main difference: Gate doesn’t take a user context because there’s no targeting. If you’re not using LaunchDarkly’s targeting for a particular flag, migration is straightforward.

Try Before You Decide

Gate’s free tier includes 10,000 API calls. Starter tier ($19.99/mo) and above get unlimited Gate usage. Enough to evaluate in a real environment, then scale without worrying about flag costs.

# Create a flag
curl -X PUT https://gate.solenoid.systems/v1/gate/flags/new_feature \
  -H "Authorization: Bearer sm_your_api_key" \
  -d '{"enabled": false, "description": "New checkout flow"}'

# Check it
curl https://gate.solenoid.systems/v1/gate/flags/new_feature \
  -H "Authorization: Bearer sm_your_api_key"

# Enable it
curl -X PUT https://gate.solenoid.systems/v1/gate/flags/new_feature \
  -H "Authorization: Bearer sm_your_api_key" \
  -d '{"enabled": true}'

Test the workflow. See if simplicity fits your team. You can always add complexity later; removing it is harder.