HTTP response notes

highStatic Hosting4 min read

Static Hosting 404 fix note

An operator checklist for narrowing down 404 errors in Static Hosting and preventing recurrence.

API 429 fix note

An operator checklist for narrowing down 429 errors in API and preventing recurrence.

highAPI4 min read

highBrowser API4 min read

Browser API CORS fix note

An operator checklist for narrowing down CORS errors in Browser API and preventing recurrence.

lowStatic Hosting5 min read

Static Hosting 404 fix note 2

An operator checklist for narrowing down 404 errors in Static Hosting and preventing recurrence.

API 429 fix note 2

An operator checklist for narrowing down 429 errors in API and preventing recurrence.

lowAPI5 min read

Browser API CORS fix note 2

An operator checklist for narrowing down CORS errors in Browser API and preventing recurrence.

lowBrowser API5 min read

mediumStatic Hosting6 min read

Static Hosting 404 fix note 3

An operator checklist for narrowing down 404 errors in Static Hosting and preventing recurrence.

API 429 fix note 3

An operator checklist for narrowing down 429 errors in API and preventing recurrence.

mediumAPI6 min read

mediumBrowser API6 min read

Browser API CORS fix note 3

An operator checklist for narrowing down CORS errors in Browser API and preventing recurrence.

lowStatic Hosting4 min read

Static Hosting 404 fix note 4

An operator checklist for narrowing down 404 errors in Static Hosting and preventing recurrence.

API 429 fix note 4

An operator checklist for narrowing down 429 errors in API and preventing recurrence.

lowAPI4 min read

Browser API CORS fix note 4

An operator checklist for narrowing down CORS errors in Browser API and preventing recurrence.

lowBrowser API4 min read

mediumStatic Hosting5 min read

Static Hosting 404 fix note 5

An operator checklist for narrowing down 404 errors in Static Hosting and preventing recurrence.

API 429 fix note 5

An operator checklist for narrowing down 429 errors in API and preventing recurrence.

mediumAPI5 min read

mediumBrowser API5 min read

Browser API CORS fix note 5

An operator checklist for narrowing down CORS errors in Browser API and preventing recurrence.

highStatic Hosting6 min read

Static Hosting 404 fix note 6

An operator checklist for narrowing down 404 errors in Static Hosting and preventing recurrence.

API 429 fix note 6

An operator checklist for narrowing down 429 errors in API and preventing recurrence.

highAPI6 min read

highBrowser API6 min read

Browser API CORS fix note 6

An operator checklist for narrowing down CORS errors in Browser API and preventing recurrence.

HTTP 400 first triage response

A HTTP first triage note for 400: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 401 first triage response

A HTTP first triage note for 401: authentication failure caused by expired token, redirect mismatch, cookie policy, CSRF state, or SMTP credential state. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 403 first triage response

A HTTP first triage note for 403: authorization failure caused by missing role, stale owner, key mismatch, inherited deny, WAF policy, or object-level permission. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 404 first triage response

A HTTP first triage note for 404: routing failure caused by missing route, wrong virtual host, rewrite rule, permalink cache, ingress rule, or missing deployed file. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 405 first triage response

A HTTP first triage note for 405: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 408 first triage response

A HTTP first triage note for 408: network failure caused by blocked port, refused listener, packet loss, VPN/proxy path, MTU, VPC rule, or long-running request. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 409 first triage response

A HTTP first triage note for 409: duplicate or lock conflict caused by concurrent writes, missing idempotency, unique keys, transaction order, or remote state drift. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 413 first triage response

A HTTP first triage note for 413: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 429 first triage response

A HTTP first triage note for 429: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 500 first triage response

A HTTP first triage note for 500: application runtime failure caused by exception, parser error, framework wiring, database adapter, automation trigger, or recursive call. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 400 post-release regression response

A HTTP post-release regression note for 400: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 401 post-release regression response

A HTTP post-release regression note for 401: authentication failure caused by expired token, redirect mismatch, cookie policy, CSRF state, or SMTP credential state. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 403 post-release regression response

A HTTP post-release regression note for 403: authorization failure caused by missing role, stale owner, key mismatch, inherited deny, WAF policy, or object-level permission. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 404 post-release regression response

A HTTP post-release regression note for 404: routing failure caused by missing route, wrong virtual host, rewrite rule, permalink cache, ingress rule, or missing deployed file. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 405 post-release regression response

A HTTP post-release regression note for 405: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 408 post-release regression response

A HTTP post-release regression note for 408: network failure caused by blocked port, refused listener, packet loss, VPN/proxy path, MTU, VPC rule, or long-running request. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 409 post-release regression response

A HTTP post-release regression note for 409: duplicate or lock conflict caused by concurrent writes, missing idempotency, unique keys, transaction order, or remote state drift. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 413 post-release regression response

A HTTP post-release regression note for 413: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 429 post-release regression response

A HTTP post-release regression note for 429: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 500 post-release regression response

A HTTP post-release regression note for 500: application runtime failure caused by exception, parser error, framework wiring, database adapter, automation trigger, or recursive call. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 400 affected user or permission response

A HTTP affected user or permission note for 400: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 401 affected user or permission response

A HTTP affected user or permission note for 401: authentication failure caused by expired token, redirect mismatch, cookie policy, CSRF state, or SMTP credential state. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 403 affected user or permission response

A HTTP affected user or permission note for 403: authorization failure caused by missing role, stale owner, key mismatch, inherited deny, WAF policy, or object-level permission. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 404 affected user or permission response

A HTTP affected user or permission note for 404: routing failure caused by missing route, wrong virtual host, rewrite rule, permalink cache, ingress rule, or missing deployed file. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 405 affected user or permission response

A HTTP affected user or permission note for 405: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 408 affected user or permission response

A HTTP affected user or permission note for 408: network failure caused by blocked port, refused listener, packet loss, VPN/proxy path, MTU, VPC rule, or long-running request. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 409 affected user or permission response

A HTTP affected user or permission note for 409: duplicate or lock conflict caused by concurrent writes, missing idempotency, unique keys, transaction order, or remote state drift. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 413 affected user or permission response

A HTTP affected user or permission note for 413: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 429 affected user or permission response

A HTTP affected user or permission note for 429: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 500 affected user or permission response

A HTTP affected user or permission note for 500: application runtime failure caused by exception, parser error, framework wiring, database adapter, automation trigger, or recursive call. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 400 specific path failure response

A HTTP specific path failure note for 400: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 401 specific path failure response

A HTTP specific path failure note for 401: authentication failure caused by expired token, redirect mismatch, cookie policy, CSRF state, or SMTP credential state. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 403 specific path failure response

A HTTP specific path failure note for 403: authorization failure caused by missing role, stale owner, key mismatch, inherited deny, WAF policy, or object-level permission. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 404 specific path failure response

A HTTP specific path failure note for 404: routing failure caused by missing route, wrong virtual host, rewrite rule, permalink cache, ingress rule, or missing deployed file. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 405 specific path failure response

A HTTP specific path failure note for 405: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 408 specific path failure response

A HTTP specific path failure note for 408: network failure caused by blocked port, refused listener, packet loss, VPN/proxy path, MTU, VPC rule, or long-running request. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 409 specific path failure response

A HTTP specific path failure note for 409: duplicate or lock conflict caused by concurrent writes, missing idempotency, unique keys, transaction order, or remote state drift. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 413 specific path failure response

A HTTP specific path failure note for 413: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 429 specific path failure response

A HTTP specific path failure note for 429: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 500 specific path failure response

A HTTP specific path failure note for 500: application runtime failure caused by exception, parser error, framework wiring, database adapter, automation trigger, or recursive call. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 400 proxy versus origin split response

A HTTP proxy versus origin split note for 400: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 401 proxy versus origin split response

A HTTP proxy versus origin split note for 401: authentication failure caused by expired token, redirect mismatch, cookie policy, CSRF state, or SMTP credential state. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 403 proxy versus origin split response

A HTTP proxy versus origin split note for 403: authorization failure caused by missing role, stale owner, key mismatch, inherited deny, WAF policy, or object-level permission. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 404 proxy versus origin split response

A HTTP proxy versus origin split note for 404: routing failure caused by missing route, wrong virtual host, rewrite rule, permalink cache, ingress rule, or missing deployed file. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 405 proxy versus origin split response

A HTTP proxy versus origin split note for 405: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 408 proxy versus origin split response

A HTTP proxy versus origin split note for 408: network failure caused by blocked port, refused listener, packet loss, VPN/proxy path, MTU, VPC rule, or long-running request. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 409 proxy versus origin split response

A HTTP proxy versus origin split note for 409: duplicate or lock conflict caused by concurrent writes, missing idempotency, unique keys, transaction order, or remote state drift. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 413 proxy versus origin split response

A HTTP proxy versus origin split note for 413: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 429 proxy versus origin split response

A HTTP proxy versus origin split note for 429: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 500 proxy versus origin split response

A HTTP proxy versus origin split note for 500: application runtime failure caused by exception, parser error, framework wiring, database adapter, automation trigger, or recursive call. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 400 timeout and load response

A HTTP timeout and load note for 400: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 401 timeout and load response

A HTTP timeout and load note for 401: authentication failure caused by expired token, redirect mismatch, cookie policy, CSRF state, or SMTP credential state. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 403 timeout and load response

A HTTP timeout and load note for 403: authorization failure caused by missing role, stale owner, key mismatch, inherited deny, WAF policy, or object-level permission. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 404 timeout and load response

A HTTP timeout and load note for 404: routing failure caused by missing route, wrong virtual host, rewrite rule, permalink cache, ingress rule, or missing deployed file. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 405 timeout and load response

A HTTP timeout and load note for 405: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 408 timeout and load response

A HTTP timeout and load note for 408: network failure caused by blocked port, refused listener, packet loss, VPN/proxy path, MTU, VPC rule, or long-running request. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 409 timeout and load response

A HTTP timeout and load note for 409: duplicate or lock conflict caused by concurrent writes, missing idempotency, unique keys, transaction order, or remote state drift. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 413 timeout and load response

A HTTP timeout and load note for 413: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 429 timeout and load response

A HTTP timeout and load note for 429: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 500 timeout and load response

A HTTP timeout and load note for 500: application runtime failure caused by exception, parser error, framework wiring, database adapter, automation trigger, or recursive call. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 400 cache or propagation drift response

A HTTP cache or propagation drift note for 400: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 401 cache or propagation drift response

A HTTP cache or propagation drift note for 401: authentication failure caused by expired token, redirect mismatch, cookie policy, CSRF state, or SMTP credential state. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 403 cache or propagation drift response

A HTTP cache or propagation drift note for 403: authorization failure caused by missing role, stale owner, key mismatch, inherited deny, WAF policy, or object-level permission. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 404 cache or propagation drift response

A HTTP cache or propagation drift note for 404: routing failure caused by missing route, wrong virtual host, rewrite rule, permalink cache, ingress rule, or missing deployed file. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 405 cache or propagation drift response

A HTTP cache or propagation drift note for 405: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 408 cache or propagation drift response

A HTTP cache or propagation drift note for 408: network failure caused by blocked port, refused listener, packet loss, VPN/proxy path, MTU, VPC rule, or long-running request. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 409 cache or propagation drift response

A HTTP cache or propagation drift note for 409: duplicate or lock conflict caused by concurrent writes, missing idempotency, unique keys, transaction order, or remote state drift. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 413 cache or propagation drift response

A HTTP cache or propagation drift note for 413: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 429 cache or propagation drift response

A HTTP cache or propagation drift note for 429: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 500 cache or propagation drift response

A HTTP cache or propagation drift note for 500: application runtime failure caused by exception, parser error, framework wiring, database adapter, automation trigger, or recursive call. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 400 local versus production drift response

A HTTP local versus production drift note for 400: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 401 local versus production drift response

A HTTP local versus production drift note for 401: authentication failure caused by expired token, redirect mismatch, cookie policy, CSRF state, or SMTP credential state. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 403 local versus production drift response

A HTTP local versus production drift note for 403: authorization failure caused by missing role, stale owner, key mismatch, inherited deny, WAF policy, or object-level permission. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 404 local versus production drift response

A HTTP local versus production drift note for 404: routing failure caused by missing route, wrong virtual host, rewrite rule, permalink cache, ingress rule, or missing deployed file. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 405 local versus production drift response

A HTTP local versus production drift note for 405: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 408 local versus production drift response

A HTTP local versus production drift note for 408: network failure caused by blocked port, refused listener, packet loss, VPN/proxy path, MTU, VPC rule, or long-running request. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 409 local versus production drift response

A HTTP local versus production drift note for 409: duplicate or lock conflict caused by concurrent writes, missing idempotency, unique keys, transaction order, or remote state drift. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 413 local versus production drift response

A HTTP local versus production drift note for 413: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 429 local versus production drift response

A HTTP local versus production drift note for 429: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 500 local versus production drift response

A HTTP local versus production drift note for 500: application runtime failure caused by exception, parser error, framework wiring, database adapter, automation trigger, or recursive call. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 400 data or input state response

A HTTP data or input state note for 400: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 401 data or input state response

A HTTP data or input state note for 401: authentication failure caused by expired token, redirect mismatch, cookie policy, CSRF state, or SMTP credential state. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 403 data or input state response

A HTTP data or input state note for 403: authorization failure caused by missing role, stale owner, key mismatch, inherited deny, WAF policy, or object-level permission. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 404 data or input state response

A HTTP data or input state note for 404: routing failure caused by missing route, wrong virtual host, rewrite rule, permalink cache, ingress rule, or missing deployed file. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 405 data or input state response

A HTTP data or input state note for 405: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 408 data or input state response

A HTTP data or input state note for 408: network failure caused by blocked port, refused listener, packet loss, VPN/proxy path, MTU, VPC rule, or long-running request. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 409 data or input state response

A HTTP data or input state note for 409: duplicate or lock conflict caused by concurrent writes, missing idempotency, unique keys, transaction order, or remote state drift. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 413 data or input state response

A HTTP data or input state note for 413: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 429 data or input state response

A HTTP data or input state note for 429: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 500 data or input state response

A HTTP data or input state note for 500: application runtime failure caused by exception, parser error, framework wiring, database adapter, automation trigger, or recursive call. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 400 safe restart decision response

A HTTP safe restart decision note for 400: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 401 safe restart decision response

A HTTP safe restart decision note for 401: authentication failure caused by expired token, redirect mismatch, cookie policy, CSRF state, or SMTP credential state. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 403 safe restart decision response

A HTTP safe restart decision note for 403: authorization failure caused by missing role, stale owner, key mismatch, inherited deny, WAF policy, or object-level permission. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 404 safe restart decision response

A HTTP safe restart decision note for 404: routing failure caused by missing route, wrong virtual host, rewrite rule, permalink cache, ingress rule, or missing deployed file. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 405 safe restart decision response

A HTTP safe restart decision note for 405: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 408 safe restart decision response

A HTTP safe restart decision note for 408: network failure caused by blocked port, refused listener, packet loss, VPN/proxy path, MTU, VPC rule, or long-running request. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 409 safe restart decision response

A HTTP safe restart decision note for 409: duplicate or lock conflict caused by concurrent writes, missing idempotency, unique keys, transaction order, or remote state drift. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 413 safe restart decision response

A HTTP safe restart decision note for 413: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 429 safe restart decision response

A HTTP safe restart decision note for 429: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 500 safe restart decision response

A HTTP safe restart decision note for 500: application runtime failure caused by exception, parser error, framework wiring, database adapter, automation trigger, or recursive call. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 400 rollback or roll-forward response

A HTTP rollback or roll-forward note for 400: HTTP request rejection caused by method, header, body size, client abort, rate limit, or response-header timing. It includes evidence, output examples, branches, and the smallest reliable fix.

HTTP 401 rollback or roll-forward response

A HTTP rollback or roll-forward note for 401: authentication failure caused by expired token, redirect mismatch, cookie policy, CSRF state, or SMTP credential state. It includes evidence, output examples, branches, and the smallest reliable fix.