> For clean Markdown of any page, append .md to the page URL. > For a complete documentation index, see https://learn.nuwebgroup.com/scale-reliability/llms.txt. > For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://learn.nuwebgroup.com/_mcp/server. # Scale & Reliability > Learn how ticketing systems handle high-demand onsales, waiting rooms, pre-queues and bots, how reliability is evaluated, and what changes as a ticketing business grows internationally. **Ticketing demand is uneven: an onsale can bring more buyers in minutes than a system sees in a typical month. This subject explains how ticketing systems handle those peaks, how to judge whether a platform is reliable, and what changes as a ticketing business grows into new countries.** Scale is both a technical and a commercial question, because costs, margins and operating models change with volume. ## Start here #### [What is an onsale in ticketing?](/scale-reliability/what-is-an-onsale-in-ticketing) Learn what a ticket onsale is, how presales and general sales differ, and how operators prepare inventory, pricing, queues and checkout. #### [How do ticketing platforms handle high-demand onsales?](/scale-reliability/how-do-ticketing-platforms-handle-high-demand-onsales) How ticketing systems manage traffic spikes, waiting rooms, seat contention, reservations, payment failures, testing and live onsale monitoring. #### [How do virtual waiting rooms work for ticket sales?](/scale-reliability/how-do-virtual-waiting-rooms-work-for-ticket-sales) Understand how ticketing waiting rooms manage high-demand traffic, queue order, admission rates and customer expectations—and what they cannot guarantee. #### [How do you evaluate ticketing platform reliability and uptime?](/scale-reliability/how-do-you-evaluate-ticketing-platform-reliability-and-uptime) Learn how to assess ticketing uptime, purchase success, latency, recovery, incident response and high-demand onsale performance beyond headline percentages. ## Key ideas in this subject #### Most demand problems are inventory problems under pressure When many buyers want the same seats, the system must allocate fairly and never sell a ticket twice while checkout stays responsive. #### Queues manage arrival, not availability Waiting rooms and pre-queues control how many buyers reach the shop and in what order. They create no extra tickets. #### Reliability should be evidenced, not asserted Uptime figures, load tests and incident history mean little without definitions. Ask how each figure was measured. #### International growth adds more than translation Languages, currencies, payment methods, tax, data residency and reporting all change in a new country. ## Reading paths All 17 explanations in Scale & Reliability, in 4 reading paths. #### 1 · High-demand onsales * [What is an onsale in ticketing?](/scale-reliability/what-is-an-onsale-in-ticketing) * [How do ticketing platforms handle high-demand onsales?](/scale-reliability/how-do-ticketing-platforms-handle-high-demand-onsales) * [How do virtual waiting rooms work for ticket sales?](/scale-reliability/how-do-virtual-waiting-rooms-work-for-ticket-sales) * [What is a pre-queue in ticketing?](/scale-reliability/what-is-a-pre-queue-in-ticketing) * [How do ticketing platforms control bots during onsales?](/scale-reliability/how-do-ticketing-platforms-control-bots-during-onsales) * [How do large ticket presales manage access codes?](/scale-reliability/how-do-large-ticket-presales-manage-access-codes) #### 2 · Performance and reliability * [How do you evaluate ticketing platform reliability and uptime?](/scale-reliability/how-do-you-evaluate-ticketing-platform-reliability-and-uptime) * [How do you performance-test a high-demand ticket onsale?](/scale-reliability/how-do-you-performance-test-a-high-demand-ticket-onsale) * [How can ticketing checkout remain responsive under heavy demand?](/scale-reliability/how-can-ticketing-checkout-remain-responsive-under-heavy-demand) * [How do you design ticketing integrations for high-demand onsales?](/scale-reliability/how-do-you-design-ticketing-integrations-for-high-demand-onsales) #### 3 · Growing the business * [How do ticketing technology costs change as a business grows?](/scale-reliability/how-do-ticketing-technology-costs-change-as-a-business-grows) * [How can ticketing businesses protect margins as they scale?](/scale-reliability/how-can-ticketing-businesses-protect-margins-as-they-scale) * [How can ticketing platforms support new countries and event types?](/scale-reliability/how-can-ticketing-platforms-support-new-countries-and-event-types) #### 4 · International operations * [What should a ticketing company consider before entering a new country?](/scale-reliability/what-should-a-ticketing-company-consider-before-entering-a-new-country) * [How do ticketing platforms support different languages and locales?](/scale-reliability/how-do-ticketing-platforms-support-different-languages-and-locales) * [How do international ticketing businesses manage data residency and cross-border access?](/scale-reliability/how-do-international-ticketing-businesses-manage-data-residency-and-cross-border-access) * [How do multi-country ticketing teams standardise reporting without losing local detail?](/scale-reliability/how-do-multi-country-ticketing-teams-standardise-reporting-without-losing-local-detail) ## How this subject connects to others #### [Events & Inventory](/events-inventory) Onsales stress the inventory model, from holds to overselling prevention. #### [Strategy & Selection](/strategy-selection) Scalability evidence is a criterion when choosing a provider. > How ticketing systems cope with high-demand onsales, stay available and support growth into new markets. ## Docs - [What is an onsale in ticketing?](https://learn.nuwebgroup.com/scale-reliability/what-is-an-onsale-in-ticketing.md): Learn what a ticket onsale is, how presales and general sales differ, and how operators prepare inventory, pricing, queues and checkout. - [How do ticketing platforms handle high-demand onsales?](https://learn.nuwebgroup.com/scale-reliability/how-do-ticketing-platforms-handle-high-demand-onsales.md): How ticketing systems manage traffic spikes, waiting rooms, seat contention, reservations, payment failures, testing and live onsale monitoring. - [How do virtual waiting rooms work for ticket sales?](https://learn.nuwebgroup.com/scale-reliability/how-do-virtual-waiting-rooms-work-for-ticket-sales.md): Understand how ticketing waiting rooms manage high-demand traffic, queue order, admission rates and customer expectations—and what they cannot guarantee. - [What is a pre-queue in ticketing?](https://learn.nuwebgroup.com/scale-reliability/what-is-a-pre-queue-in-ticketing.md): How pre-queues differ from first-come waiting rooms and what fairness means at onsale. - [How do ticketing platforms control bots during onsales?](https://learn.nuwebgroup.com/scale-reliability/how-do-ticketing-platforms-control-bots-during-onsales.md): Methods for reducing automated abuse without blocking legitimate buyers. - [How do large ticket presales manage access codes?](https://learn.nuwebgroup.com/scale-reliability/how-do-large-ticket-presales-manage-access-codes.md): Eligibility imports, unique codes, presale redemption rules and launch testing. - [How do you evaluate ticketing platform reliability and uptime?](https://learn.nuwebgroup.com/scale-reliability/how-do-you-evaluate-ticketing-platform-reliability-and-uptime.md): Learn how to assess ticketing uptime, purchase success, latency, recovery, incident response and high-demand onsale performance beyond headline percentages. - [How do you performance-test a high-demand ticket onsale?](https://learn.nuwebgroup.com/scale-reliability/how-do-you-performance-test-a-high-demand-ticket-onsale.md): Load tests, failure scenarios, metrics and launch readiness for high-demand ticket sales. - [How can ticketing checkout remain responsive under heavy demand?](https://learn.nuwebgroup.com/scale-reliability/how-can-ticketing-checkout-remain-responsive-under-heavy-demand.md): Protecting basket state, payments and customers during heavy ticket demand. - [How do you design ticketing integrations for high-demand onsales?](https://learn.nuwebgroup.com/scale-reliability/how-do-you-design-ticketing-integrations-for-high-demand-onsales.md): Protect shared inventory when partner APIs and integrations receive sudden onsale traffic. - [How do ticketing technology costs change as a business grows?](https://learn.nuwebgroup.com/scale-reliability/how-do-ticketing-technology-costs-change-as-a-business-grows.md): Understanding fixed costs, variable costs and operating leverage for growing ticketing businesses. - [How can ticketing businesses protect margins as they scale?](https://learn.nuwebgroup.com/scale-reliability/how-can-ticketing-businesses-protect-margins-as-they-scale.md): Commercial and operational controls that preserve margin as ticketing volume grows. - [How can ticketing platforms support new countries and event types?](https://learn.nuwebgroup.com/scale-reliability/how-can-ticketing-platforms-support-new-countries-and-event-types.md): Extending a ticketing platform to additional geographies, formats and operational models. - [What should a ticketing company consider before entering a new country?](https://learn.nuwebgroup.com/scale-reliability/what-should-a-ticketing-company-consider-before-entering-a-new-country.md): Commercial, payments, operational and compliance checks for ticketing expansion. - [How do ticketing platforms support different languages and locales?](https://learn.nuwebgroup.com/scale-reliability/how-do-ticketing-platforms-support-different-languages-and-locales.md): Language, locale, currency, time-zone and content decisions for international ticket shops. - [How do international ticketing businesses manage data residency and cross-border access?](https://learn.nuwebgroup.com/scale-reliability/how-do-international-ticketing-businesses-manage-data-residency-and-cross-border-access.md): Distinguishing storage location, data transfers, access controls and privacy responsibilities. - [How do multi-country ticketing teams standardise reporting without losing local detail?](https://learn.nuwebgroup.com/scale-reliability/how-do-multi-country-ticketing-teams-standardise-reporting-without-losing-local-detail.md): Shared reporting metrics across currencies, venues, taxes and operating models.