---
title: "EBS's new faster volume type, Redis Labs becomes a unicorn, and the beauty of TTL indexes"
publication: "DB Weekly"
issue: 319
published_at: "2020-08-28"
canonical_url: "https://dbweekly.com/issues/319"
---

Plus more database news, views, and links.       

#319 — August 28, 2020 

[Read on the Web](https://dbweekly.com/issues/319)   

Database Weekly 

[![\](https://res.cloudinary.com/cpress/image/upload/w_1280,e_sharpen:60/v1598615298/bncxmr43ntvxdxg3u0yx.png)](https://aws.amazon.com/blogs/aws/new-ebs-volume-type-io2-more-iops-gib-higher-durability/)  

[AWS EBS Gets New Volume Type (io2) with Higher Durability and IOPS Aimed at Databases](https://aws.amazon.com/blogs/aws/new-ebs-volume-type-io2-more-iops-gib-higher-durability/) — AWS’s Elastic Block Storage service now has a new volume type aimed at ‘high-performance, business-critical databases and workloads’ (and cites SAP HANA, SQL Server and IBM DB2, in particular) which promises 100x higher durability and 10x more IOPS/GiB than other options. 

Jeff Barr (AWS)   

[Microsoft Now Developing Its Own Hadoop](https://www.datanami.com/2020/08/26/microsoft-now-developing-its-own-hadoop/) — Microsoft’s Azure division is working on its own distribution of Hadoop under its ‘HDInsight’ brand. 

Alex Woodie   [![\](https://copm.s3.amazonaws.com/ba85c780.jpg)](https://cockroachlabs.com/db/try-free-tshirt?utm_campaign=cooperpress-2020-Q3&utm_source=db-weekly&utm_medium=newsletter&utm_content=cc-tshirt) 

[Try CockroachDB Free for 30 Days and Get a T-Shirt 👕](https://cockroachlabs.com/db/try-free-tshirt?utm_campaign=cooperpress-2020-Q3&utm_source=db-weekly&utm_medium=newsletter&utm_content=cc-tshirt) — Scale fast, survive anything, deploy anywhere. CockroachDB is the SQL database for developers building modern applications. Try for free today and we'll send you a Cockroach t-shirt. 

Cockroach Labs sponsor   

[Redis Labs Raises $100 Million, Becomes a Unicorn](https://redislabs.com/press/redis-labs-raises-100-million-series-f-financing/) — The company behind the Redis database/data structure store has raised a large round of funding and taken its valuation to over $1bn. 

Redis Labs   

[Why PostgreSQL 13 Will Be a 'Lucky' Release](https://info.crunchydata.com/blog/why-postgresql-13-is-a-lucky-release) — See why the author thinks that 13, often maligned as an ‘unlucky’ number, will be lucky for Postgres — it adds features like incremental sort, parallel vacuum, and improves performance of B-tree indexes. 

Jonathan S. Katz   

[A Look at TTL Indexes in Mongo](https://brandur.org/fragments/ttl-indexes) — When someone as smart as Brandur says a MongoDB feature is *“one of the most useful new database features in years”, I listen. TTL indexes provide a way to automatically prune old data. Redis and DynamoDB have similar concepts and I use TTLs on the latter to run [engineeringblogs.xyz](https://engineeringblogs.xyz/) :-) 

Brandur Leach   

[MongoDB Grows Asian Footprint Through Alibaba Cloud](https://www.computerweekly.com/news/252488051/MongoDB-grows-Asian-footprint-through-Alibaba-Cloud) — In an effort to expands its presence in the Asia-Pacific region MongoDB is now working with Alibaba Cloud who will offer MongoDB via its ‘ApsaraDB for MongoDB’ service. 

Aaron Tan   

▶[Database Penetration Testing and Privilege Escalation](https://www.youtube.com/watch?v=bmoLCw0_nzE) — A 40-minute exploration of database exploitations (MariaDB, MySQL) via the use of user-defined functions. 

Motasem Hamdan   

[How to Turn An Ordinary `gzip` Archive into a Database](https://rushter.com/blog/gzip-indexing/) — How specially crafted gzip archives can be used as a database-like store. 

Artem Golubin   

[How Wix is Able to Host 1 Million Sites Per MongoDB Cluster](https://www.wix.engineering/post/how-we-re-able-to-host-1-million-sites-per-mongodb-cluster) — When you need to store millions of databases with multiple collections efficiently, what do you do? This is exactly the question Wix faced when working on its [Wix Data](https://support.wix.com/en/article/about-wix-data) service. 

Giedrius Graževičius (Wix)     

🕰 **ICYMI** _(Some older stuff that's worth checking out...)_ 

- Whether you’re a beginner or looking to take your skills to the next level, you're bound to find something to add to your reading list here: [16 of the best books to learn SQL](https://www.datapine.com/blog/best-sql-books/).
- Brent Ozar asked what the "worst database decision you ever made" was. It's worth [digging into the comments here](https://www.brentozar.com/archive/2020/06/what-was-the-worst-database-decision-you-ever-made/).
- A few decent [tips and pointers here](https://dev.to/insolita/notes-for-migrating-an-app-from-mysql-to-postgres-3693) on migrating an app from MySQL to Postgres.
- Krzysztof Ksiazek shows [how to design a geo-distributed, multi-DB MariaDB database setup](https://severalnines.com/database-blog/how-design-geographically-distributed-mariadb-cluster) using MariaDB Cluster to achieve high availability.          

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