There are more than 11 000 doctors available in the database, and about 300 000 patient feedback entries.
Over 2 000 appointments are booked every day using the service
However, Doc.online started its rapid development in 2020, and added a number of new features to the service, a convenient mobile app, expanded its geography to other countries, and is continuing to grow.
Because of all these changes, more server resources were required to support its perfect functioning.
The problems that arose regarding the hosting, with the growth of the service:
The decisions that were made:
What we did:
1. Designing and building the architecture
For each separate country service of doc.online, we have built a highly-scalable architecture on AWS. The architecture was created with microservices. The system allows to rapidly gain resources when needed, and is scailing automatically depending on the user activity load.
2. Ensuring security and fault-tolerance
We made sure the architecture is secure from hacker and DDoS attacks, and is fault-tolerant. We set up a professional monitoring to see and eliminate the upcoming problems.
3. Cost optimization
We were building the system with cost optimization in mind, and afterwords adjusted the system even more, so it could bring more profit to our clients.
We tested the system thoroughly
5. Performing the migrations with zero downtime
The services were moved to the new AWS architecture without the downtime.
Using highly-scalable cloud architecture on AWS, the service is operating smoothly now, showing short response time even in the hours of high user activity.
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