Posted on Aug 09 2018 (about 2 years ago)
The application that is at the core of MessageBird is responsible for delivering SMS messages in an optimal way with the level of certainty that our customers expect is built in PHP and contains most of the knowledge of the business.
We process tens of millions of messages per day with moderate continuous traffic but huge spikes from time to time. Most of the challenges lie in long-running background processors.
We employ Event Sourcing to process the huge amount of messages and follow Domain Driven Design to develop an application that fits the needs of our stakeholders.
The application is rigorously automatically tested and continuously statically analyzed. This, along with extensive monitoring tools, gives us the confidence to deploy several times per day.