Add dev-prod parity analysis and recommendations
Analyze current differences between development and production environments and provide three options for improving parity: 1. Conservative: Minimal changes, maximum benefit - 2 replicas for critical services - Resource limits at 50% of prod - Specific CORS origins - Resource impact: +30% RAM 2. High Parity: Maximum similarity - Match all prod replica counts - Production resource limits - Enable SSL and monitoring - Resource impact: +200% RAM 3. Hybrid: Balanced approach - 2 replicas for stateful services - Resources at 60% of prod - Production configs with dev features - Resource impact: +100% RAM Recommendation: Start with Option 1 for best cost/benefit ratio.
This commit is contained in:
Claude
227
docs/DEV-PROD-PARITY-ANALYSIS.md
Normal file
227
docs/DEV-PROD-PARITY-ANALYSIS.md
Normal file
@@ -0,0 +1,227 @@
|
|||||||
|
# Dev-Prod Parity Analysis
|
||||||
|
|
||||||
|
## Current Differences Between Dev and Prod
|
||||||
|
|
||||||
|
### 1. **Replicas**
|
||||||
|
- **Dev**: 1 replica per service
|
||||||
|
- **Prod**: 2-3 replicas per service
|
||||||
|
- **Impact**: Multi-replica issues (race conditions, session handling, etc.) won't be caught in dev
|
||||||
|
|
||||||
|
### 2. **Resource Limits**
|
||||||
|
- **Dev**: Minimal (64Mi-256Mi RAM, 25m-200m CPU)
|
||||||
|
- **Prod**: Not explicitly set (uses defaults from base manifests)
|
||||||
|
- **Impact**: Resource exhaustion issues may appear only in prod
|
||||||
|
|
||||||
|
### 3. **Environment Variables**
|
||||||
|
- **Dev**: DEBUG=true, LOG_LEVEL=DEBUG, PROFILING_ENABLED=true
|
||||||
|
- **Prod**: DEBUG=false, LOG_LEVEL=INFO, PROFILING_ENABLED=false
|
||||||
|
- **Impact**: Different code paths, performance characteristics
|
||||||
|
|
||||||
|
### 4. **CORS Configuration**
|
||||||
|
- **Dev**: `*` (wildcard, accepts all origins)
|
||||||
|
- **Prod**: Specific domains only
|
||||||
|
- **Impact**: CORS issues won't be caught in dev
|
||||||
|
|
||||||
|
### 5. **SSL/TLS**
|
||||||
|
- **Dev**: HTTP only (ssl-redirect: false)
|
||||||
|
- **Prod**: HTTPS required (Let's Encrypt)
|
||||||
|
- **Impact**: SSL-related issues not tested in dev
|
||||||
|
|
||||||
|
### 6. **Image Pull Policy**
|
||||||
|
- **Dev**: `Never` (uses local images)
|
||||||
|
- **Prod**: Default (pulls from registry)
|
||||||
|
- **Impact**: Image versioning issues not caught in dev
|
||||||
|
|
||||||
|
### 7. **Storage Class**
|
||||||
|
- **Dev**: Uses default Kind storage
|
||||||
|
- **Prod**: Uses `microk8s-hostpath`
|
||||||
|
- **Impact**: Storage-related differences
|
||||||
|
|
||||||
|
### 8. **Rate Limiting**
|
||||||
|
- **Dev**: RATE_LIMIT_ENABLED=false
|
||||||
|
- **Prod**: RATE_LIMIT_ENABLED=true
|
||||||
|
- **Impact**: Rate limit logic not tested in dev
|
||||||
|
|
||||||
|
## Recommendations for Dev-Prod Parity
|
||||||
|
|
||||||
|
### ✅ What SHOULD Be Aligned
|
||||||
|
|
||||||
|
1. **Resource Limits Structure**
|
||||||
|
- Keep dev limits lower, but use same structure
|
||||||
|
- Use 50% of prod limits in dev
|
||||||
|
- This catches resource issues early
|
||||||
|
|
||||||
|
2. **Critical Environment Variables**
|
||||||
|
- Same security settings (password requirements, JWT config)
|
||||||
|
- Same timeout values
|
||||||
|
- Same business rules
|
||||||
|
- Different: DEBUG, LOG_LEVEL (dev needs verbosity)
|
||||||
|
|
||||||
|
3. **Some Replicas for Critical Services**
|
||||||
|
- Run 2 replicas of gateway, auth in dev
|
||||||
|
- Catches load balancing and state management issues
|
||||||
|
- Still saves resources vs prod
|
||||||
|
|
||||||
|
4. **CORS Configuration**
|
||||||
|
- Use specific origins in dev (localhost, 127.0.0.1)
|
||||||
|
- Catches CORS issues early
|
||||||
|
|
||||||
|
5. **Rate Limiting**
|
||||||
|
- Enable in dev with higher limits
|
||||||
|
- Tests the code path without being restrictive
|
||||||
|
|
||||||
|
### ⚠️ What SHOULD Stay Different
|
||||||
|
|
||||||
|
1. **Debug Settings**
|
||||||
|
- Keep DEBUG=true in dev (needed for development)
|
||||||
|
- Keep verbose logging (LOG_LEVEL=DEBUG)
|
||||||
|
- Keep profiling enabled
|
||||||
|
|
||||||
|
2. **SSL/TLS**
|
||||||
|
- Optional: Can enable self-signed certs in dev
|
||||||
|
- But HTTP is simpler for local development
|
||||||
|
|
||||||
|
3. **Image Pull Policy**
|
||||||
|
- Keep `Never` in dev (faster iteration)
|
||||||
|
- Local builds are essential for dev workflow
|
||||||
|
|
||||||
|
4. **Replica Counts**
|
||||||
|
- 1-2 in dev vs 2-3 in prod (balance between parity and resources)
|
||||||
|
|
||||||
|
5. **Monitoring**
|
||||||
|
- Optional in dev to save resources
|
||||||
|
- Essential in prod
|
||||||
|
|
||||||
|
## Proposed Changes for Better Dev-Prod Parity
|
||||||
|
|
||||||
|
### Option 1: Conservative (Recommended)
|
||||||
|
Minimal changes, maximum benefit:
|
||||||
|
|
||||||
|
1. **Increase critical service replicas to 2**
|
||||||
|
- gateway: 1 → 2
|
||||||
|
- auth-service: 1 → 2
|
||||||
|
- Tests load balancing, keeps other services at 1
|
||||||
|
|
||||||
|
2. **Align resource limits structure**
|
||||||
|
- Use same resource structure as prod
|
||||||
|
- Set to 50% of prod values
|
||||||
|
|
||||||
|
3. **Fix CORS in dev**
|
||||||
|
- Use specific origins instead of wildcard
|
||||||
|
- Better matches prod behavior
|
||||||
|
|
||||||
|
4. **Enable rate limiting with high limits**
|
||||||
|
- Tests the code path
|
||||||
|
- Won't interfere with development
|
||||||
|
|
||||||
|
### Option 2: High Parity (More Resources Needed)
|
||||||
|
Maximum similarity, higher resource usage:
|
||||||
|
|
||||||
|
1. **Match prod replica counts**
|
||||||
|
- Run 2 replicas of all services
|
||||||
|
- Requires more RAM (12-16GB)
|
||||||
|
|
||||||
|
2. **Use production resource limits**
|
||||||
|
- Helps catch OOM issues early
|
||||||
|
- Requires powerful development machine
|
||||||
|
|
||||||
|
3. **Enable SSL in dev**
|
||||||
|
- Use self-signed certs
|
||||||
|
- Matches prod HTTPS behavior
|
||||||
|
|
||||||
|
4. **Enable all production features**
|
||||||
|
- Monitoring, tracing, etc.
|
||||||
|
|
||||||
|
### Option 3: Hybrid (Best Balance)
|
||||||
|
Balance between parity and development speed:
|
||||||
|
|
||||||
|
1. **2 replicas for stateful/critical services**
|
||||||
|
- gateway, auth, tenant, orders: 2 replicas
|
||||||
|
- Others: 1 replica
|
||||||
|
|
||||||
|
2. **Resource limits at 60% of prod**
|
||||||
|
- Catches issues without being restrictive
|
||||||
|
|
||||||
|
3. **Production-like configuration**
|
||||||
|
- Same CORS policy (with dev domains)
|
||||||
|
- Rate limiting enabled (higher limits)
|
||||||
|
- Same security settings
|
||||||
|
|
||||||
|
4. **Keep dev-friendly features**
|
||||||
|
- DEBUG=true
|
||||||
|
- Verbose logging
|
||||||
|
- Hot reload
|
||||||
|
- HTTP (no SSL)
|
||||||
|
|
||||||
|
## Impact Analysis
|
||||||
|
|
||||||
|
### Resource Usage Comparison
|
||||||
|
|
||||||
|
**Current Dev Setup:**
|
||||||
|
- ~20 pods running
|
||||||
|
- ~2-3GB RAM
|
||||||
|
- ~1-2 CPU cores
|
||||||
|
|
||||||
|
**Option 1 (Conservative):**
|
||||||
|
- ~22 pods (2 extra replicas)
|
||||||
|
- ~3-4GB RAM (+30%)
|
||||||
|
- ~1.5-2.5 CPU cores
|
||||||
|
|
||||||
|
**Option 2 (High Parity):**
|
||||||
|
- ~40 pods (double)
|
||||||
|
- ~8-10GB RAM (+200%)
|
||||||
|
- ~4-5 CPU cores
|
||||||
|
|
||||||
|
**Option 3 (Hybrid):**
|
||||||
|
- ~28 pods
|
||||||
|
- ~5-6GB RAM (+100%)
|
||||||
|
- ~2-3 CPU cores
|
||||||
|
|
||||||
|
### Benefits of Increased Parity
|
||||||
|
|
||||||
|
1. **Catch Multi-Instance Issues**
|
||||||
|
- Race conditions
|
||||||
|
- Distributed locks
|
||||||
|
- Session management
|
||||||
|
- Load balancing problems
|
||||||
|
|
||||||
|
2. **Resource Issues Found Early**
|
||||||
|
- Memory leaks
|
||||||
|
- OOM errors
|
||||||
|
- CPU bottlenecks
|
||||||
|
|
||||||
|
3. **Configuration Validation**
|
||||||
|
- CORS issues
|
||||||
|
- Rate limiting bugs
|
||||||
|
- Security misconfigurations
|
||||||
|
|
||||||
|
4. **Deployment Confidence**
|
||||||
|
- Fewer surprises in production
|
||||||
|
- Better testing
|
||||||
|
- Reduced rollbacks
|
||||||
|
|
||||||
|
### Tradeoffs
|
||||||
|
|
||||||
|
**Pros:**
|
||||||
|
- ✅ Catches more issues before production
|
||||||
|
- ✅ More realistic testing environment
|
||||||
|
- ✅ Better confidence in deployments
|
||||||
|
- ✅ Team learns production behavior
|
||||||
|
|
||||||
|
**Cons:**
|
||||||
|
- ❌ Higher resource requirements
|
||||||
|
- ❌ Slower startup times
|
||||||
|
- ❌ More complex troubleshooting
|
||||||
|
- ❌ Longer rebuild cycles
|
||||||
|
|
||||||
|
## Implementation Guide
|
||||||
|
|
||||||
|
If you want to proceed with **Option 1 (Conservative)**, I can:
|
||||||
|
|
||||||
|
1. Update dev kustomization to run 2 replicas of critical services
|
||||||
|
2. Add resource limits that mirror prod structure (at 50%)
|
||||||
|
3. Fix CORS to use specific origins
|
||||||
|
4. Enable rate limiting with dev-friendly limits
|
||||||
|
5. Create a "dev-high-parity" profile for those who want closer matching
|
||||||
|
|
||||||
|
Would you like me to implement these changes?
|
||||||
Reference in New Issue
Block a user