Performance optimization of distributed-system models with unreliable servers

1990 ◽  
Vol 39 (2) ◽  
pp. 236-243 ◽  
Author(s):  
I.F. Akyildiz ◽  
W. Liu
2021 ◽  
Vol 40 (2) ◽  
pp. 65-69
Author(s):  
Richard Wai

Modern day cloud native applications have become broadly representative of distributed systems in the wild. However, unlike traditional distributed system models with conceptually static designs, cloud-native systems emphasize dynamic scaling and on-line iteration (CI/CD). Cloud-native systems tend to be architected around a networked collection of distinct programs ("microservices") that can be added, removed, and updated in real-time. Typically, distinct containerized programs constitute individual microservices that then communicate among the larger distributed application through heavy-weight protocols. Common communication stacks exchange JSON or XML objects over HTTP, via TCP/TLS, and incur significant overhead, particularly when using small size message sizes. Additionally, interpreted/JIT/VM-based languages such as Javascript (NodeJS/Deno), Java, and Python are dominant in modern microservice programs. These language technologies, along with the high-overhead messaging, can impose superlinear cost increases (hardware demands) on scale-out, particularly towards hyperscale and/or with latency-sensitive workloads.


1980 ◽  
Vol 102 (2) ◽  
pp. 94-100 ◽  
Author(s):  
D. L. Margolis

Bond graphs are used for finite mode representations of distributed system dynamics. As long as all inputs to the system are “efforts” in a causal sense, then no formulation problems exist. However, if some of the system inputs are causal “flows”, then differential causality will exist and extremely tedious, often impossible, algebraic loops must be solved to formulate system equations. A procedure is developed which avoids these algebraic problems by including additional modal compliance in the system model without its associated modal inertia. The result of this approach is a finite mode distributed system model, devoid of artificially induced high frequencies, extremely accurate in a chosen frequency range, and capable of interacting with other distributed system models. The procedure is demonstrated through example.


2018 ◽  
Vol 49 (3) ◽  
pp. 478-497 ◽  
Author(s):  
Miran Hasanagić ◽  
Peter W. V. Tran‐Jørgensen ◽  
René S. Nilsson ◽  
Peter Gorm Larsen

2014 ◽  
Vol 51 (6) ◽  
pp. 347-418
Author(s):  
Miquel Bertran ◽  
Francesc Babot ◽  
August Climent

2017 ◽  
Vol 22 (S1) ◽  
pp. 2371-2381 ◽  
Author(s):  
Yuzhu Wang ◽  
Huiqun Hao ◽  
Junqiang Zhang ◽  
Jinrong Jiang ◽  
Juanxiong He ◽  
...  

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