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: 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 unfortunately – architecture getting more complex – additional costs like VPN, NatGateway – regular resource access become more annoying solution one - bastion host Host Instance ProxyJump Bastion PreferredAuthentications

vectorized code The talk: ▪ share experience with vectorization using std::simd ▪ introduce the SIMD_ACCESS library 3 Olaf Krzikalla, DLR SP, 2024-09-17Background: Vectorization Nowadays, all your CPUs can loop body No vector type information in x, y, z or i →Explicit load and store operations Explicit access provided by std::simd ▪ Requires rearranging and rewriting the loop body ▪ Different scalar version rearrangement) necessary ▪ Same code for scalar and vector versions SIMD_ACCESS(z, i) = SIMD_ACCESS(x, i) + SIMD_ACCESS(y, i);SIMD_ACCESS Library https://github.com/dlr-sp/simdize Supplements std::experimental::simd

here we will focus on buffers The buffers memory management model separates the storage and access of data and automatically handles data dependencies USM provides a more explicit memory management buffer manage data across the host and one or more devices An accessor represents a request to access the data on a particular device with a particular set of properties #include to create dependencies to the data managed by their respective buffers They are also used to access the data once on the device #include int main(int argc, char *argv[]) { std::vector

container's iterators understand (and abstract) that container's internal structure • Iterators • Provide access to container elements through well-defined interfaces with strict guarantees • Algorithms • Employ Classic STL has five iterator categories • Output • Input • Forward • Bidirectional • Random-access • Arranged in a hierarchy of requirements • Not public inheritance 23 Output Input Forward Operation Access element *p Access member of element p->mem Compare for equality of postion p == q, p != q Move forward by 1 ++p, p++ Move backward by 1 --p, p-- Make a copy (assign) q = p Access arbitrary

· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 3895 14.11.5 Role-Based Access Control · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 3906 14.11.6 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 6725 17.9.2 Lightweight Directory Access Protocol (LDAP) · · · · · · · · · · · · · · · · · · · · 6725 17.9.3 Long Term Support (LTS) · · Scheduling 2.2 TiDB 8.4.0 Release Notes Release date: November 11, 2024 TiDB version: 8.4.0 Quick access: Quick start 8.4.0 introduces the following key features and improvements: Category <

· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 3881 14.11.5 Role-Based Access Control · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 3892 14.11.6 Scheduling 2.2 TiDB 8.4.0 Release Notes Release date: November 11, 2024 TiDB version: 8.4.0 Quick access: Quick start 8.4.0 introduces the following key features and improvements: Category < Starting from TiProxy v1.3.0, you can use tiproxyctl to connect to the TiProxy instance, capture access traffic in a TiDB production cluster, and replay it in a test cluster at a specified rate. This feature

· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 3847 14.11.5 Role-Based Access Control · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 3858 14.11.6 Scheduling 2.2 TiDB 8.3.0 Release Notes Release date: August 22, 2024 TiDB version: 8.3.0 Quick access: Quick start 8.3.0 introduces the following key features and improvements: Category < or tools. This feature simplifies TiProxy deployment and �→ reduces the complexity of the database access layer. 2.2.1 Feature details 2.2.1.1 Performance • The optimizer allows pushing the Projection

· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 3833 14.11.5 Role-Based Access Control · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 3844 14.11.6 Scheduling 2.2 TiDB 8.2.0 Release Notes Release date: July 11, 2024 TiDB version: 8.2.0 Quick access: Quick start 8.2.0 introduces the following key features and improvements: Category < starts it, such as v8.2.0. To view the latest version, run tiup list tidb. This command returns the access methods of the cluster: CLUSTER START SUCCESSFULLY, Enjoy it ^-^ To connect TiDB: mysql --comments

· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 3799 14.11.5 Role-Based Access Control · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 3810 14.11.6 Scheduling 2.2 TiDB 8.1.0 Release Notes Release date: May 24, 2024 TiDB version: 8.1.0 Quick access: Quick start | Production deployment TiDB 8.1.0 is a Long-Term Support Release (LTS). Compared starts it, such as v8.1.1. To view the latest version, run tiup list tidb. This command returns the access methods of the cluster: CLUSTER START SUCCESSFULLY, Enjoy it ^-^ To connect TiDB: mysql --comments

. . 152 9.8.2 Configuring the hard disk vendor product data (VPD) . . . . . . . . . . 154 9.8.3 Access iSCSI targets via Internal Networking . . . . . . . . . . . . . . . 155 9.9 Launching more than 120 57. 12 1 First steps In particular, Guest Additions provide for “shared folders”, which let you access files from the host system from within a guest machine. Shared folders are described in chapter 4 machine display. The VirtualBox Remote Desktop Extension (VRDE) allows for high-performance remote access to any running virtual machine. This extension supports the Remote Desktop Protocol (RDP) originally