https://www.greyker.com/blog daily 0.75 2026-03-09 https://www.greyker.com/blog/news-in-the-new-year-from-greyker monthly 0.5 2026-01-15 https://images.squarespace-cdn.com/content/v1/67f530228487065ab7d7955a/72cacf5c-9195-44c1-be89-9a15621ef403/Greyker+Logo+-+Black.png Blog - 2025 in review - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://www.greyker.com/blog/wall-street-canary monthly 0.5 2026-01-13 https://images.squarespace-cdn.com/content/v1/67f530228487065ab7d7955a/3768b8ca-2041-4db3-af07-98aaf9b10389/wallstcanary-large.png Blog - Wall St. Canary - A clear focus on news impacting your investments. Over 50% of financial news and media reporting focuses on the 20 largest stocks. What if you invest in companies outside of that group? What if you miss a story that impacts one of your holdings? Enter Wall Street Canary. A simple weekly report, delivered via e-mail that highlights key news and numbers that impact your specific holdings. Learn more, and sign up at wallstcanary.com https://www.greyker.com/blog/tracking-ev-battery-health-at-scale monthly 0.5 2025-10-07 https://images.squarespace-cdn.com/content/v1/67f530228487065ab7d7955a/dba68529-df1e-450a-b0e2-ff8afa5bc0bd/EVTOL+Battery+data+POC+%282%29.png Blog - Tracking EV Fleet Battery Health - Make it stand out Logical architecture of EV battery data analytics pipeline https://images.squarespace-cdn.com/content/v1/67f530228487065ab7d7955a/df358ea5-4481-4ed5-b589-e3b65106d6c9/CC-Flink-evtol-battery-data.png Blog - Tracking EV Fleet Battery Health Each of these readings is streamed into Kafka as an event over the course of 5 minutes. We use JSON for ease of use and to illustrate the visualization within Confluent Cloud. https://images.squarespace-cdn.com/content/v1/67f530228487065ab7d7955a/7b23a0ef-902b-456c-9b8f-28dcd4d94776/CC-Flink-evtol-battery-state.png Blog - Tracking EV Fleet Battery Health - Our demo publishes an aggregation that describes the distribution of each metric over the past time minute. https://www.greyker.com/blog/accelerating-kafkaflink-throughput-by-4x monthly 0.5 2026-01-15 https://images.squarespace-cdn.com/content/v1/67f530228487065ab7d7955a/8510674b-3c50-43cc-9de9-57378abc0936/Screenshot+JSON+message+volume.png Blog - Accelerating Kafka/Flink throughput - In this small cluster, we processed 1.2 million events per minute at peak. Our Flink cluster would scale up to 2 CFUs. In contrast, our Kafka cluster had hit its soft limit of 50 CFUs. Confluent Cloud Flink event volume with JSON messages https://images.squarespace-cdn.com/content/v1/67f530228487065ab7d7955a/c209f480-10f4-42bf-bb26-ee7a5accb168/Screenshot+Protobuf+message+volume.png Blog - Accelerating Kafka/Flink throughput - Without modifying anything else in the pipeline, or increasing the size of the Kafka cluster, we were able to achieve peak throughput of 5 million messages consumed, and 6 million produced per minute. https://www.greyker.com/blog/8j1cs1wndnh9i8kkxkiwh3dbdi4j2b monthly 0.5 2025-10-03 https://images.squarespace-cdn.com/content/v1/67f530228487065ab7d7955a/6f70fb0c-19c6-4d31-917d-82d8348d750b/Flink+Position+Keeper+%282%29.png Blog - Building a Position Calculator on FIX messages in Flink - Make it stand out Architecture diagram for a simple position calculator application in Flink SQL https://images.squarespace-cdn.com/content/v1/67f530228487065ab7d7955a/c38f15d4-0a48-4cd9-a93e-28105384e772/Screenshot+2025-06-13+at+9.47.26%E2%80%AFAM.png Blog - Building a Position Calculator on FIX messages in Flink Our first step is to take FIX messages and publish them to Kafka as JSON using a python application. https://images.squarespace-cdn.com/content/v1/67f530228487065ab7d7955a/6f6f0249-d12c-470a-94ce-11f60e8834e3/Screenshot+2025-06-13+at+8.11.59%E2%80%AFAM.png Blog - Building a Position Calculator on FIX messages in Flink Flink excels at filter and aggregation functions on large streams of data. A position is an aggregation on a stream of trade events. The logic for our demo is expressed in simple SQL, and Confluent Cloud provides a convenient IDE and UI to test and deploy statements. https://images.squarespace-cdn.com/content/v1/67f530228487065ab7d7955a/ff742e7d-7f02-4e13-b088-5dc685f25b8f/Screenshot+2025-06-25+at+4.00.48%E2%80%AFPM.png Blog - Building a Position Calculator on FIX messages in Flink We pass 3 million FIX messages to Kafka and demonstrate how CC Flink scales to handle additional volume and meet latency targets. In our example 3 million messages are processed by Flink SQL within 5 minutes. The cluster auto-scales from 1 CFU to 4 to handle this load. https://www.greyker.com/blog/blog-post-one-rcm3n monthly 0.5 2025-06-05 https://www.greyker.com/blog/where-we-have-been monthly 0.5 2026-01-15 https://images.squarespace-cdn.com/content/v1/67f530228487065ab7d7955a/c7a0f304-80e3-4cd9-8a96-821afec69280/x11-screenshot.png Blog - Friday Musings: Why streaming data? Why Now? - My first real, grown up job was supporting a trading and risk-management system a FX Options desk. I’d get in early in the morning, talk to Europe on the way in, and then walk the trading floor, making sure every trader could start their X-11 windows. 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