scalability
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Reading Group. DeepScaling: microservices autoscaling for stable CPU utilization in large scale cloud systems
In the 127th meeting, we discussed the “DeepScaling: microservices autoscaling for stable CPU utilization in large scale cloud systems” SoCC’22 paper by Ziliang Wang, Shiyi Zhu, Jianguo Li, Wei Jiang, K. K. Ramakrishnan, Yangfei Zheng, Meng Yan, Xiaohong Zhang, Alex X. Liu. This paper argues that current Autoscaling solutions for Microservice applications are lacking in…
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Reading Group Special Session: Scalability and Fault Tolerance in YDB
YDB is an open-source Distributed SQL Database. YDB is used as an OLTP Database for mission-critical user-facing applications. It provides strong consistency and serializable transaction isolation for the end user. One of the main characteristics of YDB is scalability to very large clusters together with multitenancy, i.e. ability to provide an isolated user environment for…
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Reading Group. Darwin: Scale-In Stream Processing
In the 99th reading group meeting, we discussed stream processing. The paper we read, “Darwin: Scale-In Stream Processing” by Lawrence Benson and Tilmann Rabl, argues that many stream processing systems are relatively inefficient in utilizing the hardware. These inefficiencies stem from the need to ingest large volumes of data to the requirement of durably storing…
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Reading Group. Shard Manager: A Generic Shard Management Framework for Geo-distributed Applications
The 97th paper in the reading group was “Shard Manager: A Generic Shard Management Framework for Geo-distributed Applications.” This paper from Facebook talks about a sharding framework used in many of Facebook’s internal systems and applications. Sharding is a standard way to provide horizontal scalability — systems can break down their data into (semi-) independent…
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Reading Group. ByShard: Sharding in a Byzantine Environment
Our 93rd paper in the reading group was “ByShard: Sharding in a Byzantine Environment” by Jelle Hellings, Mohammad Sadoghi. This VLDB’21 paper talks about sharded byzantine systems and proposes an approach that can implement 18 different multi-shard transaction algorithms. More specifically, the paper discusses two-phase commit (2PC) and two-phase locking (2PL) in a byzantine environment.…
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Reading Group. Pegasus: Tolerating Skewed Workloads in Distributed Storage with In-Network Coherence Directories
Hard to imagine, but the reading group just completed the 45th session. We discussed “Pegasus: Tolerating Skewed Workloads in Distributed Storage with In-Network Coherence Directories,” again from OSDI’20. Pegasus is one of these systems that are very obvious in the hindsight. However, this “obviousness” is deceptive — Dan Ports, one of the authors behind the…
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Reading Group. Autoscaling Tiered Cloud Storage in Anna.
This week we looked at “Autoscaling Tiered Cloud Storage in Anna.” This is the second Anna paper. The first one introduces Anna Key-Value store, and the second paper talks about various “cloud-native” improvements. The presentation by Michael Whittaker is available here: Short Summary Anna is an eventual-consistent key-value data store, where each value is a…
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PigPaxos: continue devouring communication bottlenecks in distributed consensus.
This is a short follow-up to Murat’s PigPaxos post. I strongly recommend reading it first as it provides full context for what is to follow. And yes, it also includes the explanation of what pigs have to do with Paxos. Short Recap of PigPaxos. In our recent SIGMOD paper we looked at the bottleneck of…
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One Page Summary. Aegean: Replication beyond the client-server model
One Page Summary. Aegean: Replication beyond the client-server model This paper builds o n a key observation about the operation of complex distributed applications. Namely, microservice style of application rarely follows a simple client-server architecture, where a client makes a request and the server (or servers) respond to a request. Instead, many applications often use…
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