Scaling up for IPL 2023
We’ve had some great feats when it comes to performance engineering, but the one that occurred recently, in preparation for the...
Demystifying G1 GC, GCLocker, JNI Critical, and Fake OOM Exceptions
This post is co-authored together with Hardik Shah and Avneesh Sharma. TesseractDBTM runs on the JVM, which allows us to iterate...
Introducing TesseractDB™ Generation 3
This article is co-authored with Lalitha Duru, Hardik Shah, and Avneesh Sharma. We’ve come a long way since CleverTap was founded...
Automate Releases to Maven Central via GitHub Actions
After a long hiatus from maintaining the CleverTap/apns-http2 repository, some foundational work was required: switch to publishing on Maven Central directly....
Using dd, iostat, iotop, and blktrace to Discover a Bug in the Linux Kernel
With a recent redesign, we gradually transitioned our in-house analytics database to run on Graviton. This has been a 6-month long...
Moving from SSH to SSM for Automation
We've come a long way since the last time we recaliberated our architecture. We're now ISO 27001 and SOC 2 compliant!...
Using Java’s Security Policy to Block Internet Access for JUnit Tests
We have a relatively large Java code base (387K LOC as reported by our SonarQube installation), written by a team of...
Streaming Data from S3 in a Reliable Way
This article is co-authored with Hardik Shah. When we redesigned our querying and data storage architecture in Arc, some of the...