docs: Add links to latest tech talks
@@ -12,6 +12,12 @@ We hold monthly Tech Talks that explain the project's technical underpinnings. Y
* Jan 2021: Data Lifecycle in InfluxDB IOx & How it Uses Object Storage for Persistence [recording](https://www.youtube.com/watch?v=KwdPifHC1Gc)
* February 2021: Intro to the InfluxDB IOx Read Buffer [recording](https://www.youtube.com/watch?v=KslD31VNqPU) [slides](https://www.slideshare.net/influxdata/influxdb-iox-tech-talks-intro-to-the-influxdb-iox-read-buffer-a-readoptimized-inmemory-query-execution-engine)
* March 2021: Query Engine Design and the Rust-Based DataFusion in Apache Arrow [recording](https://www.youtube.com/watch?v=K6eCAVEk4kU) [slides](https://www.slideshare.net/influxdata/influxdb-iox-tech-talks-query-engine-design-and-the-rustbased-datafusion-in-apache-arrow-244161934)
+* April 2021: InfluxDB IOx Tech Talks: Replication, Durability and Subscriptions in InfluxDB IOx [recording](https://www.youtube.com/watch?v=UQj8ZaH5Yi4) [slides](https://www.slideshare.net/influxdata/influxdb-iox-tech-talks-replication-durability-and-subscriptions-in-influxdb-iox)
+* May 2021: Catalogs - Turning a Set of Parquet Files into a Data Set [recording](https://www.youtube.com/watch?v=Zaei3l3qk0c), [slides](https://www.slideshare.net/influxdata/catalogs-turning-a-set-of-parquet-files-into-a-data-set)
+* June 2021: Performance Profiling in Rust [recording](https://www.youtube.com/watch?v=_ZNcg-nAVTM), [slides](https://www.slideshare.net/influxdata/performance-profiling-in-rust)
+* July 2021: Impacts of Sharding, Partitioning, Encoding & Sorting on Distributed Query Performance [recording](https://www.youtube.com/watch?v=VHYMpItvBZQ), [slides](https://www.slideshare.net/influxdata/impacts-of-sharding-partitioning-encoding-and-sorting-on-distributed-query-performance)
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## Table of Contents:
