Runtime Safety
Runtime safety protects active workloads while they are executing. It helps ensure that requests, jobs, services, scripts, processes, and applications operate within controlled limits without causing failures, instability, resource exhaustion, unauthorized activity, or unpredictable behavior.
Runtime safety focuses on execution protection before work begins, while work is active, and after execution has completed. The objective is to maintain reliable behavior and prevent unsafe operations from affecting the system.
Core Runtime Safety Controls
- Authentication: Verify the identity of users, services, applications, workers, and processes before execution is allowed.
- Authorization: Restrict access according to permissions, roles, workload type, and execution policies.
- Input Validation: Reject malformed, incomplete, oversized, unsafe, or unexpected input before processing begins.
- Execution Limits: Apply restrictions to memory usage, CPU consumption, execution time, request size, and concurrent activity.
- Rate Limiting: Prevent excessive requests that could overload execution resources.
- Isolation: Separate workloads to prevent one process from affecting another.
- Secret Protection: Secure credentials, keys, tokens, and runtime configuration values.
- Audit Logging: Record execution events, actions, changes, failures, and access activity.
Runtime Execution Risks
Runtime environments can encounter conditions that reduce reliability or create unsafe execution behavior.
- Invalid or malformed input
- Resource exhaustion
- Memory leaks
- Infinite loops
- Uncontrolled process growth
- Stalled workloads
- Duplicate execution
- Queue overflow
- Dependency failures
- Unexpected exceptions
- Excessive concurrency
- Execution deadlocks
- Long-running blocked tasks
- Unauthorized workload execution
- Service interruption
Execution Isolation
Isolation prevents active workloads from interfering with one another during runtime execution. Controlled separation improves reliability and limits the impact of failures.
Process Isolation
Separates execution into independent processes so failures do not spread across the system.
Memory Isolation
Prevents workloads from reading or modifying memory that belongs to other processes.
Resource Isolation
Applies limits so individual workloads cannot consume excessive CPU, memory, or network capacity.
Execution Isolation
Places workloads into controlled environments that reduce unintended interaction.
Runtime Protection During Execution
Runtime protection is not limited to the beginning of a workload. Safety controls continue throughout active execution.
- Monitor resource usage continuously.
- Detect failed or unhealthy processes.
- Terminate stalled execution automatically.
- Apply timeout rules.
- Restart failed workers.
- Block excessive requests.
- Capture runtime exceptions.
- Record execution history.
- Release locked resources after failure.
- Generate alerts when limits are exceeded.
Runtime Recovery Behavior
Safe runtime environments should recover from failures without causing system-wide instability.
Retry Handling
Attempt execution again when temporary failures occur.
Fallback Actions
Provide alternative behavior when primary services become unavailable.
Failure Containment
Prevent failures from spreading to unrelated workloads.
Resource Cleanup
Release memory, files, sessions, and temporary execution resources after failure.
Runtime Safety Objectives
The purpose of runtime safety is to maintain stable execution while protecting active workloads from conditions that could interrupt, corrupt, overload, or destabilize system behavior.
An effective runtime environment validates input, controls resource use, isolates workload execution, records activity, detects failures, and maintains predictable operation throughout the workload lifecycle.