After hedged requests (4 Nov), this post covers load shedding: early reject, priority classes, saturation signals, honest 503s, client backoff contracts, brownout before blackout, multi-tenant fairness and how shed differs from backpressure and rate limits.

भारत्यागधर्मः: A Metrical Codification of Load Shedding (with English glosses)

What this post is about

Load shedding deliberately drops or degrades work under overload so admitted work still succeeds within budget.

Topics covered

1. Overload without total slowdown
2. Early edge reject
3. Priority classes
4. Saturation signals
5. Honest 503 and Retry-After
6. Client backoff contract
7. Brownout before blackout
8. Per-tenant fairness
9. Game-day rehearsal
10. Backpressure vs rate limit vs shed

Sanskrit title

भारत्यागधर्मः = bhāra-tyāga-dharmaḥ “dharma of abandoning load”.

English

Minimizable; Sanskrit-first.

ग्राह्यम् / Keep

१. reject early: before deep queues
२. protect critical classes: drop batch first
३. trigger on saturation: queue age concurrency
४. return cheap 503: with Retry-After
५. clients backoff: no stampede
६. brownout optional features: before core blackout
७. fair per tenant: noisy neighbor first

त्याज्यम् / Avoid

• accept everything until total timeout storm
• silent hang instead of 503
• global random drop while one tenant floods

पदच्छेदः
अतिभारः यदि सर्वं स्वीक्रियते तदा सर्वं मन्दं भवति । भारत्यागधर्मस्तस्माद् मितप्रवेशः ॥१॥

Word-for-word

Gloss table

English sense
Load shedding refuses some work early under overload so the work you keep still meets latency and correctness goals.

Context / topic
Topic: why shed. Distinct from backpressure which slows senders and from rate limits which are often steady-state quotas.

वृत्तमिति: ८-८-८-८।

पदच्छेदः
shed at edge before deep queues । late reject sunk cost ॥२॥

Word-for-word

Gloss table

English sense
Reject at the door when possible. Dropping after expensive parse and auth still wastes the scarce resource.

Context / topic
Topic: early reject.

वृत्तमिति: ८-८-८-८।

पदच्छेदः
priority classes: critical > batch । equal drop lottery अपर्याप्तम् ॥३॥

Word-for-word

Gloss table

English sense
Protect interactive and revenue paths first. Fair random drops can kill login while spare batch thrives.

Context / topic
Topic: priorities.

वृत्तमिति: ८-८-८-८।

पदच्छेदः
load signal: queue age concurrency CPU । only RPS threshold माया ॥४॥

Word-for-word

Gloss table

English sense
Trigger on saturation signals that track user pain not only raw request rate.

Context / topic
Topic: signals.

वृत्तमिति: ८-८-८-८।

पदच्छेदः
cheap 503 + Retry-After स्पष्टम् । hang silent शत्रुः ॥५॥

Word-for-word

Gloss table

English sense
Failed fast with a clear code and retry hint. Silent hangs multiply client retries and worsen the storm.

Context / topic
Topic: honest failure.

वृत्तमिति: एकादशाक्षराः पादाः।

पदच्छेदः
clients must honor shed signals । retry stampede द्विदाहः ॥६॥

Word-for-word

Gloss table

English sense
Callers need jittered backoff and budgeted retries. Ignoring shed turns protection into a retry storm.

Context / topic
Topic: client contract.

वृत्तमिति: ८-८-८-८।

पदच्छेदः
partial degradation before hard shed । feature off > total black ॥७॥

Word-for-word

Gloss table

English sense
Disable expensive optional features before refusing core paths. Brownout beats blackout when designed.

Context / topic
Topic: brownout.

वृत्तमिति: ८-८-८-८।

पदच्छेदः
multi-tenant fair shed per tenant । one noisy neighbor सर्वान् दहति ॥८॥

Word-for-word

Gloss table

English sense
Shed or throttle the hot tenant first. Global random drops punish quiet tenants for one offender.

Context / topic
Topic: multi-tenant fairness.

वृत्तमिति: ८-८-८-८।

पदच्छेदः
practice shed in game days । first time prod अन्धम् ॥९॥

Word-for-word

Gloss table

English sense
Rehearse shedding and brownout paths. Untested drop logic fails open or fails wrong classes.

Context / topic
Topic: rehearsal.

वृत्तमिति: ८-८-८-८।

पदच्छेदः
प्रतिदाबः slow sender दरसीमा steady quota । भारत्यागः overload drop ॥१०॥

Word-for-word

Gloss table

English sense
Backpressure slows producers; rate limits enforce steady quotas; load shed drops under overload to save the core. Related valves different timescales.

Context / topic
Topic: series distinctions.

सन्धिः: दाब मन्दय; सीमा नित्यकोटा; त्याग आपातपातः।

वृत्तमिति: एकादशाक्षराः पादाः।

पदच्छेदः
early priority signal honest-client brownout पञ्चकम् । एभिर्भारत्यागधर्मो मितप्रवेशसमन्वितः ॥११॥

Word-for-word

Gloss table

English sense
Five limbs: early reject, priority classes, saturation signals, honest codes with client backoff and brownout before blackout.

Context / topic
Topic: checklist.

वृत्तमिति: ८-८-८-८।

पदच्छेदः
इति भारत्यागधर्मसारो मितप्रवेशसमन्वितः । मितं त्यागं क्रियायोग्यं तन्त्रधर्मः स उच्यते ॥१२॥

Word-for-word

Gloss table

English sense
Closing: drop early, drop the right work and keep the core fast when the world is on fire.

Context / topic
Topic: close.

उपसंहारन्यायः: द्वारे वारय; श्रेष्ठं रक्ष; सत्यं ५०३ं वद।

वृत्तमिति: ८-८-८-८।

१. Why shed
२. Early reject
३. Priority
४. Signals
५. Honest 503
६. Client contract
७. Brownout
८. Multi-tenant
९. Rehearse
१०. Series
११. Five limbs
१२. Close

1. Prior: backpressure 2026-10-07; hedges 2026-11-04; multi-tenant 2026-09-08.
2. Domain: load shedding under overload.
3. English minimizable; Sanskrit-first.
4. Style: no em dash; no Oxford comma in English clauses.