Enrique Saurez, Bharath Balasubramanian, R. Schlichting, Brendan Tschaen, Zhe Huang, S. Narayanan, U. Ramachandran
{"title":"METRIC: A Middleware for Entry Transactional Database Clustering at the Edge","authors":"Enrique Saurez, Bharath Balasubramanian, R. Schlichting, Brendan Tschaen, Zhe Huang, S. Narayanan, U. Ramachandran","doi":"10.1145/3286685.3286686","DOIUrl":"https://doi.org/10.1145/3286685.3286686","url":null,"abstract":"A geo-distributed database for edge architectures spanning thousands of sites needs to assure efficient local updates while replicating sufficient state across sites to enable global management and support mobility, failover etc. To address this requirement, a new paradigm for database clustering that achieves a better balance than existing solutions between performance and strength of semantics called entry transactionality is introduced. Inspired by entry consistency in shared memory systems, entry transactionality guarantees that only a client that owns a range of keys in the database has a sequentially consistent value of the keys and can perform local and, hence, efficient transactions across these keys. Important use cases enabled by entry transactionality such as federated controllers and state management for edge applications are identified. The semantics of entry transactionality incorporating the complex failure modes in geo-distributed services are defined, and the difficult challenges in realizing these semantics are outlined. Then, a novel Middleware for Entry Transactional Clustering (METRIC) that combines existing SQL databases with an underlying geo-distributed entry consistent store to realize entry transactionality is described. This paper provides initial findings from an on-going effort.","PeriodicalId":391625,"journal":{"name":"Proceedings of the 3rd Workshop on Middleware for Edge Clouds & Cloudlets","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125886071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Genc Tato, M. Bertier, E. Rivière, Cédric Tedeschi
{"title":"ShareLatex on the Edge: Evaluation of the Hybrid Core/Edge Deployment of a Microservices-based Application","authors":"Genc Tato, M. Bertier, E. Rivière, Cédric Tedeschi","doi":"10.1145/3286685.3286687","DOIUrl":"https://doi.org/10.1145/3286685.3286687","url":null,"abstract":"Collaborative web applications benefit from good responsiveness. This can be difficult to achieve with deployments on core data centers subject to high network latencies. Hybrid deployments using a mix of core and edge resources closer to end users are a promising alternative. Many challenges are associated with hybrid deployments of applications, starting from their decomposition into components able to be replicated dynamically onto edge resources to the management and consistency of these components' state. We report on our experience with the hybrid deployment of ShareLatex, a legacy collaborative web application. We show how its design based on the use of microservices and resource-oriented APIs allows for an efficient modular decomposition. We detail how we adapted the application configuration for a hybrid deployment with no modification to its source code. Our experiments using a fleet of emulated users show that the use of a hybrid deployment for this legacy collaborative application can decrease user-perceived application latencies for common operations at the cost of increasing them for operations involving core/edge coordination traffic.","PeriodicalId":391625,"journal":{"name":"Proceedings of the 3rd Workshop on Middleware for Edge Clouds & Cloudlets","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130091185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Proceedings of the 3rd Workshop on Middleware for Edge Clouds & Cloudlets","authors":"Rolando Martins, Hervé Paulino, L. Veiga","doi":"10.1145/3286685","DOIUrl":"https://doi.org/10.1145/3286685","url":null,"abstract":"","PeriodicalId":391625,"journal":{"name":"Proceedings of the 3rd Workshop on Middleware for Edge Clouds & Cloudlets","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115113510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}