Edge-computing в iGaming

1) Why Edge

Low latency. Faster first pixel and first click: lobby, filters, recommendations.
Geo-smart perimeter. Block lists/white lists, age restrictions, routing according to regulations.
Personalization without load on the core. Ranking cards, banners, local showcases.
Sustainability. During backend degradation, some scripts work from cache/static layers.

Where Edge is especially useful: start screens/lobbies, game catalogs, promos and banners, checking provider availability by region, live feeds and tournament tables (read-heavy), ETA status by payments (read-through), consent/cookies/thin flags.

2) Basic building blocks

CDN/PoP: static cache and API microcash (1-30 sec).
Edge Functions/Workers: JS/Wasm functions in milliseconds: headers, cookies, A/B, geo-branching, media URL signature.
KV/Edge-cache: ultra-fast KV-storage/key-value for configs, flags, weather tips, "warm" showcases.
R2/Object-store at the edge: images/manifestos, provider lists, static prerenders.
Edge authentication (easy): validation of signatures/light tokens; full sign-in - in the kernel.

3) Routing and geo-compliance patterns

Geo routing: country/region → nearest regional cluster, taking into account "resident data."

Accessibility rules: "provider X is not available in DE" - hide cards on the edge.
Age-gate on the edge: 18 +/19 +/21 + soft screen saver with local tone and policy reference.
Resident data: metadata only on Edge; PII/payment tokens - strictly in the regional core.

4) Edge-personalization lobby

Unaccounted for: context (language, time zone, device, performance, country) → secure smart collections.
Accounting: light profile/flags from KV (not PII) → section order, genre ranking, banners.

Prerender sections: top 10 by genre, "return to unfinished," "now popular in your region."

Guardrails: no sensitive rules (CUS/limits) on the edge - only displaying what the kernel has confirmed.

5) Cash and microcash

CDN cache: static, images, manifests.
Micro-cache API (1-5 seconds): directories, ratings, live counters - a sharp decrease in RPS in peaks.
Stale-while-revalidate: show outdated for 10-60 seconds, update in parallel.
Cache key: path + language + region + flags (storefront versions).
Negative-cache (short): for empty/erroneous answers - carefully, 1-3 seconds.

6) Edge experiments and feature-flags

Sticky-bucket by cookie/ID: stable option for the user.
Guard metrics on edge: Stop option when error/latency spike.
Experience without server round-trip: CTA text, section order, banner illustrations.
Prohibition of dangerous A/B at the edge: payments/CCM/limits/compliance - only from the core.

7) Safety and anti-bot

WAF/bot control: signatures, behavioral heuristics at the edge, captcha challenge for anomalies.
Media Link Signature: URL with HMAC and short TTL.
Rate-limits: per-IP/fingerprint/endpoint; «burst + sustain».
Editing logs: masking everything that can be PII; Edge logs do not contain PAN/IBAN.
mTLS to core: Edge↔yadro over protected tunnels/identities.

8) Payments, KYC and limits: what to transfer to Edge and what not

On Edge (read-only): transaction statuses, ETA, format hints, list of available methods by region.
Only in the core: payment initiation, limit check, KYC/AML, returns and balance.
Gateway rule: Edge does not "know" the balance/limits - it only displays secure prompts signed by time and region.

9) Real-time on the edge (live, tournaments, streams)

WebSocket/SSE/WebRTC: distributed nodes closer to the player.
Fan out: Kernel to Edge nodes, then local delivery.

Leaderboards: quick score cue on KV/Redis-near the edge; Periodic consolidation in OLAP

Backpressure: limiting the frequency of updates, aggregation with batches.

10) Edge Observability and Telemetry

PoP metrics: TTFB, cache-hit-ratio, p95/p99 by region, WAF/bot challenge errors.
Correlation: 'traceparent/x-request-id' from → Edge client → core.
Sampling: increased for error/slow paths.
SLO on Edge routes: ≥99 availability. 95% showcase/promo, TTFB p95 ≤ 150-250 ms.

11) Example: Edge function (pseudocode)

js export default async function handle(req, ctx) {
const geo = ctx. geo. country;     // DE, BR, CA...
const lang = negotiate(req, ['en', 'de', 'tr', 'es']);
const flags = await ctx. kv. get(`flags:${geo}:${lang}`)          {};
//simple window personalization const cacheKey = 'lobby: $ {geo}: $ {lang}: $ {flags. version || 'v1'}`;
let html = await ctx. cache. get(cacheKey);
if (!html) {
const data = await fetch(`${ORIGIN}/lobby? geo=${geo}&lang=${lang}`, { cf: { cacheTtl: 5 }});
html = renderTemplate(await data. json(), { flags });
ctx. cache. put(cacheKey, html, { ttl: 30, swr: 60 });
}
//geo-compliance: hide prohibited providers html = stripProviders (html, policyFor (geo));
return new Response(html, { headers: { 'content-type': 'text/html; charset=utf-8' }});
}

12) Success metrics (minimum)

TTFB p95/INP on key pages (lobby/game/promo).
Cache hit-ratio (target ≥ 80% for static, ≥ 50% for microcash).
Edge-RPS to Origin-RPS ratio (offload).
Error/WAF/Challenge rate cut by region.
CTR cards/banners and TTP (time-to-play) after Edge personalization.
SLA live channels (WS/SSE): connection failures, reconnect time.

13) Checklists

Before turning on the Edge layer

• Path and Data Map - What can be cached/personalized.
• Geo/age/provider policies are documented.
• Masking logs and disabling PII on Edge.
• Rate-limits, WAF, bot-check; list of trusted headers.
• Trace and SLO on the Edge→yadro path.

For Edge personalization

• Flag/KV sources do not contain secrets.
• KV/flag absence fallbacks.
• А/B sticky и guardrails; quickly disabling the option.

For live/tournaments

• Regional replica accounts/tape.
• Backpressure and update rate.
• Degradation test: origin drop does not break state reading.

14) Anti-patterns

Edge performs "heavy" business logic (wallet/limits/fees).
PII/payment token storage at the edge.
Personalization tied to balance/betting history right on Edge.
Endless TTL on catalogs and promo → desynchronization of conditions.
Rely on 'X-Forwarded-For' without a chain of trusted proxies.
A/B at critical steps (payments/CCM) without server validation.

15) Cost and FinOps

Fractional PoP traffic: Microcash reduces egress to origin.
Cache warming up during releases and large events/tournaments.
Edge bundles: minimize the size of functions and dependencies; watch out for cold starts.

16) Implementation process (4 steps)

1. Perimeter map and policies: geo/age/providers/jurisdictions → rules.
2. Cache and showcases: statics + API microcash, lobby prerender, SWR.
3. Edge functions: personalization without PII, A/B, WAF/bot check, media signature.
4. Live channels: regional WS/SSE nodes, fan-out, backpressure, metrics.

Final cheat sheet

Make fast and secure: personalization, cache, routing and protection - on the edge; money and identity are at the core.
Geo-compliance and age - filtering on Edge before rendering.
Micro-cache + SWR reduce load → p95/99 drop.
Edge-A/B - UI-only variants with guardrails and follbacks.
Observability and SLO by PoR/region are mandatory.

Need - I will prepare a map of your paths/policies, a list of safe flags, cache key schemes and Edge function templates for lobbies, promos, tournament tapes and statuses.