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donnemartin/system-design-primer

https://github.com/donnemartin/system-design-primer.git · scanned 2026-05-24 01:22 UTC (2 weeks, 6 days ago) · 10 languages

88 raw signals (34 security + 54 graph) 37th percentile · Python · tiny (<2K LoC) System graph score 93 (lower by 33)

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Complete repo analysis

Last scanned 2 weeks, 6 days ago · v1 · 50 actionable findings from 2 signal sources. 37 repeated signals grouped for readability. Security checks, system graph analysis, and verified AI-agent feedback are merged into one review queue.

JSON
Combined
82.4
/100
Security checks
72
7 findings
System graph
93
66.7% cov · 43 findings
Critical
0
click to filter
Agents
6
0 votes
Crowd
0
reported
Score breakdown â 2026-05-18-v5
Component Sub-score Weight Contribution
structure_score 55.0 0.15 8.25
security_score 100.0 0.25 25.00
testing_score 0.0 0.20 0.00
documentation_score 85.0 0.15 12.75
practices_score 40.0 0.15 6.00
code_quality 80.0 0.10 8.00
Overall 1.00 60.0
Severity distribution — click a segment to filter
Active filters: layer: software × excluding tests × Reset all
Severity: Critical 0 High 2 Medium 3 Low 38 9-Layer: Software Security Quality Integrity Frontend Hardware Data Network Cicd Source: Security checks 7 System graph 43 Crowd 0 Layer: Quality 16 Software 30 Api 1 Frontend 1 Security 1 Cicd 1
Scan summary Quality grade C+ (60/100). Dimensions: security 100, maintainability 55. 34 findings. 1,062 lines analyzed.

Showing 30 of 50 actionable findings. 87 raw detector signals were grouped into reader-sized issues. Click TP / FP to vote on a finding's accuracy — votes adjust the confidence weighting and improve detection across the platform.

low System graph software Dead code conf 1.00 Possibly dead Python function: add_card
No callers detected by AST scan in this repo. Could be exported for external callers or a framework handler.
solutions/object_oriented_design/deck_of_cards/deck_of_cards.py:66
low System graph software Dead code conf 1.00 Possibly dead Python function: add_friend_request
No callers detected by AST scan in this repo. Could be exported for external callers or a framework handler.
solutions/object_oriented_design/online_chat/online_chat.py:16
low System graph software Dead code conf 1.00 Possibly dead Python function: add_user
No callers detected by AST scan in this repo. Could be exported for external callers or a framework handler.
solutions/object_oriented_design/online_chat/online_chat.py:75
low System graph software Dead code conf 1.00 Possibly dead Python function: approve_friend_request
No callers detected by AST scan in this repo. Could be exported for external callers or a framework handler.
solutions/object_oriented_design/online_chat/online_chat.py:50
low System graph software Dead code conf 1.00 Possibly dead Python function: can_fit_vehicle
No callers detected by AST scan in this repo. Could be exported for external callers or a framework handler.
solutions/object_oriented_design/parking_lot/parking_lot.py:116
low System graph software Dead code conf 1.00 Possibly dead Python function: clear_spots
No callers detected by AST scan in this repo. Could be exported for external callers or a framework handler.
solutions/object_oriented_design/parking_lot/parking_lot.py:20
low System graph software Dead code conf 1.00 Possibly dead Python function: complete_call
No callers detected by AST scan in this repo. Could be exported for external callers or a framework handler.
solutions/object_oriented_design/call_center/call_center.py:28
low System graph software Dead code conf 1.00 Possibly dead Python function: deal_card
No callers detected by AST scan in this repo. Could be exported for external callers or a framework handler.
solutions/object_oriented_design/deck_of_cards/deck_of_cards.py:107
low System graph software Dead code conf 1.00 Possibly dead Python function: dispatch_call
No callers detected by AST scan in this repo. Could be exported for external callers or a framework handler.
solutions/object_oriented_design/call_center/call_center.py:95
low System graph software Dead code conf 1.00 Possibly dead Python function: dispatch_queued_call_to_newly_freed_employee
No callers detected by AST scan in this repo. Could be exported for external callers or a framework handler.
solutions/object_oriented_design/call_center/call_center.py:121
low System graph software Dead code conf 1.00 Possibly dead Python function: is_available
No callers detected by AST scan in this repo. Could be exported for external callers or a framework handler.
solutions/object_oriented_design/parking_lot/parking_lot.py:113
low System graph software Dead code conf 1.00 Possibly dead Python function: mapper
No callers detected by AST scan in this repo. Could be exported for external callers or a framework handler.
solutions/system_design/pastebin/pastebin.py:16
low System graph software Dead code conf 1.00 Possibly dead Python function: mapper
No callers detected by AST scan in this repo. Could be exported for external callers or a framework handler.
solutions/system_design/sales_rank/sales_rank_mapreduce.py:12
low System graph software Dead code conf 1.00 Possibly dead Python function: mapper_sort
No callers detected by AST scan in this repo. Could be exported for external callers or a framework handler.
solutions/system_design/sales_rank/sales_rank_mapreduce.py:39
low System graph software Dead code conf 1.00 Possibly dead Python function: message_group
No callers detected by AST scan in this repo. Could be exported for external callers or a framework handler.
solutions/object_oriented_design/online_chat/online_chat.py:41
low System graph software Dead code conf 1.00 Possibly dead Python function: message_user
No callers detected by AST scan in this repo. Could be exported for external callers or a framework handler.
solutions/object_oriented_design/online_chat/online_chat.py:38
low System graph software Dead code conf 1.00 Possibly dead Python function: receive_friend_request
No callers detected by AST scan in this repo. Could be exported for external callers or a framework handler.
solutions/object_oriented_design/online_chat/online_chat.py:47
low System graph software Dead code conf 1.00 Possibly dead Python function: reducer
No callers detected by AST scan in this repo. Could be exported for external callers or a framework handler.
solutions/system_design/pastebin/pastebin.py:29
low System graph software Dead code conf 1.00 Possibly dead Python function: reducer
No callers detected by AST scan in this repo. Could be exported for external callers or a framework handler.
solutions/system_design/sales_rank/sales_rank_mapreduce.py:28
low System graph software Dead code conf 1.00 Possibly dead Python function: reducer_identity
No callers detected by AST scan in this repo. Could be exported for external callers or a framework handler.
solutions/system_design/sales_rank/sales_rank_mapreduce.py:63
low System graph software Dead code conf 1.00 Possibly dead Python function: reject_friend_request
No callers detected by AST scan in this repo. Could be exported for external callers or a framework handler.
solutions/object_oriented_design/online_chat/online_chat.py:53
low System graph software Dead code conf 1.00 Possibly dead Python function: remaining_cards
No callers detected by AST scan in this repo. Could be exported for external callers or a framework handler.
solutions/object_oriented_design/deck_of_cards/deck_of_cards.py:104
low System graph software Dead code conf 1.00 Possibly dead Python function: remove
No callers detected by AST scan in this repo. Could be exported for external callers or a framework handler.
solutions/object_oriented_design/hash_table/hash_map.py:32
low System graph software Dead code conf 1.00 Possibly dead Python function: remove_user
No callers detected by AST scan in this repo. Could be exported for external callers or a framework handler.
solutions/object_oriented_design/online_chat/online_chat.py:78
low System graph software Dead code conf 1.00 Possibly dead Python function: score
No callers detected by AST scan in this repo. Could be exported for external callers or a framework handler.
solutions/object_oriented_design/deck_of_cards/deck_of_cards.py:83
low System graph software Dead code conf 1.00 Possibly dead Python function: send_friend_request
No callers detected by AST scan in this repo. Could be exported for external callers or a framework handler.
solutions/object_oriented_design/online_chat/online_chat.py:44
low System graph software Dead code conf 1.00 Possibly dead Python function: shuffle
No callers detected by AST scan in this repo. Could be exported for external callers or a framework handler.
solutions/object_oriented_design/deck_of_cards/deck_of_cards.py:116
low System graph software Dead code conf 1.00 Possibly dead Python function: spot_freed
No callers detected by AST scan in this repo. Could be exported for external callers or a framework handler.
solutions/object_oriented_design/parking_lot/parking_lot.py:83
low System graph software Dead code conf 1.00 Possibly dead Python function: steps
No callers detected by AST scan in this repo. Could be exported for external callers or a framework handler.
solutions/system_design/pastebin/pastebin.py:37
low System graph software Dead code conf 1.00 Possibly dead Python function: take_spot
No callers detected by AST scan in this repo. Could be exported for external callers or a framework handler.
solutions/object_oriented_design/parking_lot/parking_lot.py:25
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