Google Cloud Functions & AWS Lambda
Here is a quick recap of the main functionalities of both products:
| FUNCTIONALITY | AWS LAMBDA | CLOUD FUNCTIONS |
|---|---|---|
| Scalability & availability | Automatic scaling (transparently) | Automatic scaling |
| Max # of functions | Unlimited functions | 20 functions per project (during alpha) |
| Concurrent executions | 100 parallel executions per account per region (default safety throttle) | No limit |
| Max execution time | 300 seconds (5 minutes) | No limit |
| Supported Languages | JavaScript, Java and Python | Only Javascript |
| Dependencies | Deployment Packages | npm package.json |
| Deployments | Only ZIP upload (to Lambda or S3) | ZIP upload, Cloud Storage or Cloud Source Repositories |
| Versioning | Versions and aliases | Cloud Source branch/tag |
| Event-driven | Event Sources (S3, SNS, SES, DynamoDB, Kinesis, CloudWatch) | Cloud Pub/Sub or Cloud Storage Object Change Notifications |
| HTTP(S) invocation | API Gateway | HTTP trigger |
| Logs management | CloudWatch | Cloud Logging |
| In-browser code editor | Only if you don’t have dependencies | Only with Cloud Source Repositories |
| Granular IAM | IAM Roles | Not yet |
| Pricing | 1M requests for free (Free Tier), then $0.20/1M requests | Unknown until open beta |
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