Pepabo, Inc. 2019.07.25 GopherCon 2019 Optimization for number of goroutines using feedback control Principal engineer Yusuke MIYAKE @monochromegane Pepabo R&D Institute, GMO Pepabo, Inc. https://blog Design Implementation Runtime Concurrent Parallel • Thread management • Race conditions • Memory access sync • Deadlocks • Starvation • Granularity • Number of concurrency 1. Concurrency and Parallel • Thread management • Granularity • Number of concurrency • Race conditions • Memory access sync • Deadlocks • Starvation Runtime scheduler of Go �17 G M P G G Local Run Queue Global

Golang Warsaw #56 Jakub Wołynko Secure access to EC2 (for developers) Agenda – introduction – EC2 in native environment – 3-tier architecture intro – alternative methods of resource connection: groups or equivalent 3-tier architecture3-tier architecture - props and cons – full control over resource access – possibilities of disconnection resources from the internet – in general, more secure – architecture getting more complex – additional costs like VPN, NatGateway – regular resource access become more annoying solution one - bastion host Host Instance ProxyJump Bastion PreferredAuthentications

Data Access Version 5.3.36-SNAPSHOT Table of Contents 1. Transaction Management. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . or Repository Classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 3. Data Access with JDBC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 3.1. Choosing an Approach for JDBC Database Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 3.2. Package Hierarchy

Stream Processing and Analytics Vasiliki (Vasia) Kalavri
 vkalavri@bu.edu Spring 2020 4/09: Flow control and load shedding ??? Vasiliki Kalavri | Boston University 2020 Keeping up with the producers what if the queue grows larger than available memory? • block the producer (back-pressure, flow control) 2 ??? Vasiliki Kalavri | Boston University 2020 Load management approaches 3 ! Load shedder runtime and selectively drops tuples according to a QoS specification. • Similar to congestion control or video streaming in a lower quality. 4 ??? Vasiliki Kalavri | Boston University 2020 https://commons

Ov Over erview view Casdoor is a UI-first Identity Access Management (IAM) / Single-Sign-On (SSO) platform based on OAuth 2.0, OIDC, SAML, and CAS. Casdoor serves both the web UI and the login requests supports authorization management based on Casbin. It supports ACL, RBAC, ABAC, and RESTful access control models. 4. Casdoor provides phone verification code, email verification code, and password retrieval The Application will prompt the user: "Hey, I need some resources and I need your permission to access these resources. Can you go to this URL and enter your username and password for me?" With the

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 6. Keeping control over HTML . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . wicket-core wicket-auth-roles Provides support for role-based authorization. wicket-core wicket-ioc This module provides common classes to support Inversion Of Control. It’s used by both Spring and Guice integration grouping them into interfaces (you can find them in package org.apache.wicket.settings). We can access these interfaces through getter methods that will be gradually introduced in the next chapters when

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 6. Keeping control over HTML . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . wicket-core wicket-auth-roles Provides support for role-based authorization. wicket-core wicket-ioc This module provides common classes to support Inversion Of Control. It’s used by both Spring and Guice integration grouping them into interfaces (you can find them in package org.apache.wicket.settings). We can access these interfaces through getter methods, which will be gradually introduced in the next chapters

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 6. Keeping control over HTML . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . wicket-auth-roles Provides support for role-based authorization. wicket-core, wicket-tester wicket-ioc This module provides common classes to support Inversion Of Control. It’s used by both Spring and Guice grouping them into interfaces (you can find them in package org.apache.wicket.settings). We can access these interfaces through getter methods, which will be gradually introduced in the next chapters

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 6. Keeping control over HTML . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . wicket-auth-roles Provides support for role-based authorization. wicket-core wicket-ioc This module provides common classes to support Inversion Of Control. It’s used by both Spring and Guice integration grouping them into interfaces (you can find them in package org.apache.wicket.settings). We can access these interfaces through getter methods, which will be gradually introduced in the next chapters