- Release Notes and Announcements
- User Guide
- Product Introduction
- Purchase Guide
- Getting Started
- User Guide
- Quota Management
- Managing Functions
- Web Function Management
- Log Management
- Concurrence Management
- Trigger Management
- A Custom Domain Name
- Version Management
- Alias Management
- Permission Management
- Managing Monitors and Alarms
- Network Configuration
- Layer Management
- Execution Configuration
- Extended Storage Management
- DNS Caching Configuration
- Resource Managed Mode Management
- Triggers
- Development Guide
- Developer Tools
- Code Development
- Web Framework Development
- Deploying Framework on Command Line
- Quickly Deploying Egg Framework
- Quickly Deploying Express Framework
- Quickly Deploying Flask Framework
- Quickly Deploying Koa Framework
- Quickly Deploying Laravel Framework
- Quickly Deploying Nest.js Framework
- Quickly Deploying Next.js Framework
- Quickly Deploying Nuxt.js Framework
- Quickly Deploying Django Framework
- Practical Tutorial
- Overview
- Solutions with Tencent Cloud Services
- Business Development
- ServerlessFramework Practices
- API Gateway
- TRTC Practices
- COS Practices
- CKafka Practice
- CLS
- CLB Practice
- MPS
- CDN
- CDWPG
- VOD
- SMS
- ES
- Scheduled Task
- Video Processing
- Success Stories
- API Documentation
- History
- Introduction
- API Category
- Making API Requests
- Trigger APIs
- Function APIs
- CopyFunction
- Invoke
- UpdateFunctionConfiguration
- UpdateFunctionCode
- ListFunctions
- GetFunctionLogs
- GetFunction
- DeleteFunction
- CreateFunction
- PublishVersion
- ListVersionByFunction
- GetFunctionAddress
- DeleteAlias
- UpdateAlias
- ListAliases
- GetAlias
- CreateAlias
- PutTotalConcurrencyConfig
- PutReservedConcurrencyConfig
- PutProvisionedConcurrencyConfig
- GetReservedConcurrencyConfig
- GetProvisionedConcurrencyConfig
- DeleteReservedConcurrencyConfig
- DeleteProvisionedConcurrencyConfig
- UpdateFunctionEventInvokeConfig
- GetFunctionEventInvokeConfig
- InvokeFunction
- GetRequestStatus
- Namespace APIs
- Layer Management APIs
- Async Event Management APIs
- Other APIs
- Function and Layer Status Description
- Data Types
- Error Codes
- SDK Documentation
- FAQs
- Related Agreement
- Contact Us
- Glossary
- Release Notes and Announcements
- User Guide
- Product Introduction
- Purchase Guide
- Getting Started
- User Guide
- Quota Management
- Managing Functions
- Web Function Management
- Log Management
- Concurrence Management
- Trigger Management
- A Custom Domain Name
- Version Management
- Alias Management
- Permission Management
- Managing Monitors and Alarms
- Network Configuration
- Layer Management
- Execution Configuration
- Extended Storage Management
- DNS Caching Configuration
- Resource Managed Mode Management
- Triggers
- Development Guide
- Developer Tools
- Code Development
- Web Framework Development
- Deploying Framework on Command Line
- Quickly Deploying Egg Framework
- Quickly Deploying Express Framework
- Quickly Deploying Flask Framework
- Quickly Deploying Koa Framework
- Quickly Deploying Laravel Framework
- Quickly Deploying Nest.js Framework
- Quickly Deploying Next.js Framework
- Quickly Deploying Nuxt.js Framework
- Quickly Deploying Django Framework
- Practical Tutorial
- Overview
- Solutions with Tencent Cloud Services
- Business Development
- ServerlessFramework Practices
- API Gateway
- TRTC Practices
- COS Practices
- CKafka Practice
- CLS
- CLB Practice
- MPS
- CDN
- CDWPG
- VOD
- SMS
- ES
- Scheduled Task
- Video Processing
- Success Stories
- API Documentation
- History
- Introduction
- API Category
- Making API Requests
- Trigger APIs
- Function APIs
- CopyFunction
- Invoke
- UpdateFunctionConfiguration
- UpdateFunctionCode
- ListFunctions
- GetFunctionLogs
- GetFunction
- DeleteFunction
- CreateFunction
- PublishVersion
- ListVersionByFunction
- GetFunctionAddress
- DeleteAlias
- UpdateAlias
- ListAliases
- GetAlias
- CreateAlias
- PutTotalConcurrencyConfig
- PutReservedConcurrencyConfig
- PutProvisionedConcurrencyConfig
- GetReservedConcurrencyConfig
- GetProvisionedConcurrencyConfig
- DeleteReservedConcurrencyConfig
- DeleteProvisionedConcurrencyConfig
- UpdateFunctionEventInvokeConfig
- GetFunctionEventInvokeConfig
- InvokeFunction
- GetRequestStatus
- Namespace APIs
- Layer Management APIs
- Async Event Management APIs
- Other APIs
- Function and Layer Status Description
- Data Types
- Error Codes
- SDK Documentation
- FAQs
- Related Agreement
- Contact Us
- Glossary
SCF has certain quota limits for each user account.
User Account Quota Limits
Content | Default Quota Limit |
Total function code size per region | 100 GB |
Total function concurrency quota per region | 128,000 MB(Guangzhou, Shanghai, Beijing, Chengdu, and Hong Kong (China)) |
| 64,000 MB(Mumbai, Singapore, Tokyo, Silicon Valley, Frankfurt, Shenzhen Finance, and Shanghai Finance) |
Number of namespaces per region | 5 |
Total concurrent function quota per namespace | |
Number of functions per namespace | 50 |
Function Quota Limits
Content | Default Quota Limit |
Function name length limit | 60 characters. The total length of the namespace name + function name cannot exceed 118 characters. |
Maximum code size (including bound layers) per function (version) before compression | 500 MB |
Maximum number of same-type triggers per function | 10 |
Maximum environment variable size per function | 4 KB |
Number of layer versions bound to one function version | 5 |
Layer Quota Limits
Content | Default Quota Limit |
Number of layers per region | 20 |
Number of versions per layer | 200 |
Note:
SCF currently supports one million MB-level concurrency, which can effectively support scenarios with high concurrency demand such as ecommerce promotions and parallel processing of medical and biological data.
The concurrency quota per region on the SCF platform is shared by all functions by default. You can customize the function concurrency to meet your actual needs. If you want to increase the quotas or add concurrency quota management capabilities at the namespace granularity, you can directly purchase a function package.
In SCF, a COS trigger has limits in two dimensions: SCF and COS, as detailed below:
SCF dimension: One function can be bound to 10 COS triggers at most.
COS dimension: The same event and prefix/suffix rule of one COS bucket can be bound to only one function.
Function Runtime Environment Limits
Item | Quota Limit |
Allocated memory | Minimum: 64 MB, maximum: 3,072 MB, in increments of 128 MB starting from 128 MB |
Temporary cache space; i.e., size of the /tmp directory | 512 MB |
Timeout period | Minimum: 1 second, maximum: 900 seconds |
Number of file descriptors | 1,024 |
Total processes and threads | 1,024 |
Sync request event size | 6 MB |
Sync request response size | 6 MB |
Async request event size | 128 KB |
Note:
If the size of a Base64-encoded file is below 6 MB, you can pass the encoded file to SCF through API Gateway; otherwise, we recommend you upload the file to COS and pass the object address to SCF first. Then, SCF will pull the file from COS to complete the upload.
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