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Ecommerce · Technical journal
Black Friday 2025: the consolidation of Black Week
Traffic and transaction data show how a single sales day has evolved into a full commercial week with new technical demands.
3 min read
Analysis of traffic and transaction data from November 2025 has confirmed what had been brewing for years: the concept of a single day of sales has disappeared, giving way to the definitive consolidation of «Black Week.» For retailers, this represents a radical logistical and technical paradigm shift. It’s no longer enough to prepare the server for a single 24-hour traffic spike; now the infrastructure must withstand a high and sustained stress load for seven to ten consecutive days.
As PrestaShop experts, we have monitored how this change in consumer behavior, now comparing and purchasing in stages, has tested the stability of many online stores. Those businesses that didn’t have a Pressional PrestaShop Maintenance service suffered performance degradation mid-week due to the accumulation of processes and logs. The lesson is clear: resilience and medium-term stability are now more valuable than instant raw power to ensure the profitability of the most important campaign of the year.
Scalable infrastructure for a week of heavy traffic
The «Black Week» phenomenon forced a rethink of web hosting architecture. Traditional shared servers showed their weaknesses in 2025, unable to handle concurrent connections for so many hours.
The key to success lay in the use of aggressive caching systems and optimized databases capable of serving static content without constantly querying the processor. This is where the decision to Update Prestashop to version 9 played a crucial role. The improvements in core performance and SQL query handling in the modern versions allowed stores to process 40% more orders without slowdowns. Adapting to this commercial marathon involves having a technologically up-to-date platform, capable of managing stock in real time and avoiding overselling, which occurs when the system is saturated by continuous demand.
"Black Friday has ceased to be a sprint and has become a marathon of technical endurance. Winning the 2025 campaign didn't depend on having the lowest price, but on the store being fast and operational from Monday until Cyber Monday."
Planning for the coming year begins by analyzing the logs of this event. Identifying the exact moment the server (TTFB) started experiencing problems during the week allows for precise resource allocation, preventing infrastructure overruns or lost sales due to unexpected outages during off-peak days.
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