Technical Insights

Deep dives into Apache Cassandra, distributed systems, performance optimization, and software engineering at scale.

January 1, 0001 • 1 min read •


sourceSets {
    integrationTest {
        java {
            compileClasspath += main.output + test.output
            runtimeClasspath += main.output + test.output
            srcDir file( …

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January 1, 0001 • 1 min read

Vertx Connection Pooling key cache

series: performance hardware fio iperf perf events flame graphs

junit
    parameterized tests
    test templates

Kubernetes java client

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January 1, 0001 • 6 min read • cassandra, performance tuning

Analyzing Cassandra Performance with Flame Graphs

One of the challenges of running large scale distributed systems is being able to pinpoint problems. It’s all too common to blame a random component (usually a database) whenever there’s …

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cassandra performance tuning flame graphs

January 1, 0001 • 11 min read • cassandra, compression

Apache Cassandra Performance Tuning - Compression with Mixed Workloads

This is our third post in our series on performance tuning with Apache Cassandra. In our first post, we discussed how we can use Flame Graphs to visually diagnose performance problems. In our second …

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cassandra compression performance

January 1, 0001 • 8 min read • cassandra, data modeling

Cassandra Time Series Data Modeling For Massive Scale

One of the big challenges people face when starting out working with Cassandra and time series data is understanding the impact of how your write workload will affect your cluster. Writing too …

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cassandra data modeling time series

January 1, 0001 • 2 min read • junit5, kotlin

Parameterized Tests in Kotlin with Junit5

Recently I’ve worked on a few projects that have made use of interfaces in critical sections of code, with the goal of adding several more in the near future. One of these projects is …

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junit5 kotlin

January 1, 0001 • 18 min read • cassandra, compaction

TWCS part 1 - how does it work and when should you use it ?

In this post we’ll explore a new compaction strategy available in Apache Cassandra. We’ll dig into it’s use cases, limitations, and share our experiences of using it with various …

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cassandra compaction twcs

January 1, 0001 • 3 min read • cassandra, twcs

TWCS Part 2 - Using before Cassandra 3.0

In our first post about TimeWindowCompactionStrategy, Alex Dejanovski discussed use cases and the reasons for its introduction in 3.0.8 as a replacement for DateTieredCompactionStrategy. In our …

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cassandra twcs operations

January 1, 0001 • 6 min read • cassandra

Understanding the Nuance of Compaction in Apache Cassandra

Compaction in Apache Cassandra isn’t usually the first (or second) topic that gets discussed when it’s time to start optimizing your system. Most of the time we focus on data modeling and …

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cassandra

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