Web Development & Events 2025

Sala Apolo

Symfony platform for Barcelona's iconic concert venue: dynamic schedule, optimized event pages and +30% clicks to ticketing.

7 months 5 specialists 2025

Services

Symfony Development
UX/UI Design
Performance Optimization
CRO
Ticketing Integration

Related services

01The challenge

Sala Apolo manages a dynamic schedule with intense traffic spikes when popular concerts are announced or during campaigns. The primary goal is to drive traffic toward ticket purchase (external ticketing) without friction, especially on mobile. The team needs fast publishing for last-minute changes with control and stability.

02The solution

We developed a Symfony platform with an 'event-first' model: visual calendar, genre and date filters, comprehensive event pages with associated content and consistent CTAs to the ticketing system. We implemented funnel tracking with standard events and prepared performance for demand peaks with a caching strategy, query optimization and compressed assets.

Tech stack

How it's built

Front end

Twig Front-end templates

Engine

Symfony PHP framework

Data

PostgreSQL Database
Redis In-memory cache
Varnish HTTP cache
Cloudflare CDN & security

03Architecture

How a request flows

A concert is announced and the editor publishes the event in Symfony's 'event-first' model, with the full page ready within minutes
The traffic spike that follows the announcement first hits Cloudflare and then Varnish, which serves the listings and event pages from cache
The visitor filters the listings by genre and date and reaches the event page, with the CTA to the external ticketing system always visible
On clicking, the platform records the funnel tracking event and redirects to the external ticketing system
The caching strategy and query optimization keep load times low even at peak demand

04Measured impact

Results

+30% Clicks to ticketing
+16% Mobile conversion
99.97% High-demand uptime
<2s Load time

Verifiable data

Metrics in detail

Duration of the platform project (months): 7
Specialists on the project team: 5
Cache layers to sustain the spikes after a concert announcement (Cloudflare, Varnish): 2

Methodology: Project scope data (2025): duration and team come from the contract; the cache layers, from the deployed architecture. The ticketing clicks, conversion, uptime and load time metrics are in the results section of this case study.

05The process