1# Feature Specification: WebKit Memory Optimization
2
3**Feature Branch**: `005-webkit-memory-optimization`  
4**Created**: 2025-01-10  
5**Status**: Draft  
6**Input**: User description: "webkit-memory-optimization"
7
8## Execution Flow (main)
9```
101. Parse user description from Input
11   → Feature: Reduce WebKit browser memory usage from ~400MB per instance
122. Extract key concepts from description
13   → Actors: browser users, system administrators
14   → Actions: browse websites with lower memory footprint
15   → Data: memory usage metrics, configuration settings
16   → Constraints: maintain browsing stability and reasonable performance
173. For each unclear aspect:
18   → No major ambiguities identified
194. Fill User Scenarios & Testing section
20   → Primary scenario: user browses multiple websites without high memory usage
215. Generate Functional Requirements
22   → Each requirement focuses on memory reduction and monitoring capabilities
236. Identify Key Entities
24   → Memory configurations, usage statistics, optimization settings
257. Run Review Checklist
26   → No [NEEDS CLARIFICATION] markers present
27   → Implementation details excluded from spec
288. Return: SUCCESS (spec ready for planning)
29```
30
31---
32
33## ⚡ Quick Guidelines
34- ✅ Focus on WHAT users need and WHY
35- ❌ Avoid HOW to implement (no tech stack, APIs, code structure)
36- 👥 Written for business stakeholders, not developers
37
38---
39
40## User Scenarios & Testing *(mandatory)*
41
42### Primary User Story
43As a browser user, I want the browser to consume significantly less memory (40-60% reduction from current ~400MB per website) so that I can keep more browser instances open on my system without experiencing performance degradation or running out of memory.
44
45### Acceptance Scenarios
461. **Given** a browser instance with default settings, **When** I navigate to a typical website, **Then** the browser should consume no more than 250MB of memory
472. **Given** I have browsed to 50 different web pages, **When** I check memory usage, **Then** memory consumption should remain stable and not exceed reasonable limits due to memory leaks
483. **Given** memory optimization is enabled, **When** the browser approaches memory limits, **Then** it should automatically clean up memory and maintain responsive performance
494. **Given** I configure memory optimization settings, **When** I restart the browser, **Then** my memory preferences should be preserved and applied
50
51### Edge Cases
52- What happens when memory pressure is extremely high (system running out of RAM)?
53- How does the system handle memory optimization on low-memory devices (<4GB RAM)?
54- What occurs when a single webpage requires more memory than the configured limit?
55
56## Requirements *(mandatory)*
57
58### Functional Requirements
59- **FR-001**: System MUST reduce per-browser-instance memory usage by 40-60% compared to current baseline (~400MB to 150-250MB)
60- **FR-002**: System MUST provide configurable memory limits and thresholds for different usage scenarios
61- **FR-003**: Users MUST be able to choose between memory-optimized, balanced, and performance-optimized configurations
62- **FR-004**: System MUST automatically trigger memory cleanup when approaching configured memory limits
63- **FR-005**: System MUST monitor and report memory usage statistics for transparency
64- **FR-006**: System MUST maintain browser stability and prevent crashes during memory optimization
65- **FR-007**: System MUST preserve essential browsing functionality (navigation, page rendering, basic JavaScript support)
66- **FR-008**: Users MUST be able to manually trigger memory cleanup operations
67- **FR-009**: System MUST support process recycling to prevent long-term memory accumulation
68- **FR-010**: System MUST log memory optimization events for debugging and monitoring purposes
69
70### Key Entities *(include if feature involves data)*
71- **Memory Configuration**: Settings that control memory optimization behavior, including memory limits, cleanup thresholds, caching policies, and garbage collection intervals
72- **Memory Statistics**: Real-time and historical data about browser memory usage, including RSS memory, virtual memory, page load counts, and cleanup events
73- **Optimization Preset**: Pre-configured sets of memory settings for different use cases (low-memory devices, balanced performance, high-performance scenarios)
74
75---
76
77## Review & Acceptance Checklist
78*GATE: Automated checks run during main() execution*
79
80### Content Quality
81- [x] No implementation details (languages, frameworks, APIs)
82- [x] Focused on user value and business needs
83- [x] Written for non-technical stakeholders
84- [x] All mandatory sections completed
85
86### Requirement Completeness
87- [x] No [NEEDS CLARIFICATION] markers remain
88- [x] Requirements are testable and unambiguous  
89- [x] Success criteria are measurable
90- [x] Scope is clearly bounded
91- [x] Dependencies and assumptions identified
92
93---
94
95## Execution Status
96*Updated by main() during processing*
97
98- [x] User description parsed
99- [x] Key concepts extracted
100- [x] Ambiguities marked
101- [x] User scenarios defined
102- [x] Requirements generated
103- [x] Entities identified
104- [x] Review checklist passed
105
106---