Implementation of Microservices in Fintech Applications Using Expressis Framework

Along with the development of software architecture, the emergence of microservice architecture has become a trend used by developers in recent years. This study aims to analyze the implementation of microservices in Fintech applications using the ExpressJs framework. The method used in this research is descriptive qualitative method. This study uses a library research method that refers to resources available both online and offline such as: scientific journals, books and news sourced from trusted sources. The method used in making the application is DevOps. In this method, there are eight stages of software development, plan, code, build, test, release, deploy, operate, monitor. Based on the discussion and testing that has been carried out, several conclusions can be drawn namely microservice makes application development easier and more flexible by adding services as needed. Make it easier for other applications to access services that have been made via HTTP Requests, another thing is to facilitate application integration between platforms, both mobile, web and desktop.

Penerapan DevOps pada Sistem Tertanam dengan ESP8266 menggunakan Mekanisme Over The Air

ABSTRAKDevOps mendorong percepatan pengembangan sistem. Namun bukti nyata penerapannya pada sistem tertanam belum mencukupi. Salah satu penyebabnya adalah kesulitan proses deployment pada perangkat. Konsep IoT menghubungkan sistem tertanam dengan jaringan yang memungkinkan proses pembaharuan firmware menggunakan mekanisme Over The Air (OTA). Tulisan ini mengusulkan infrastruktur DevOps untuk pengembangan sistem tertanam. Perangkat keras yang digunakan adalah microcontroller ESP8266. Sedangkan lingkungan DevOps menggunakan perangkat lunak PlatformIO, GitHub dan Travis CI. Pengujian dilakukan dengan mengubah user requirement yang kemudian diterapkan pada perangkat keras. Tahapan DevOps (build and test, release hingga deploy) telah berhasil dilakukan secara otomatis. Sistem mampu mendeteksi kesalahan penulisan kode sumber. Rerata waktu keseluruhan proses adalah 77,21 detik. Proses build and test mendominasi waktu proses dengan rerata sebesar 77,21 detik dan waktu deploy memiliki rerata 1,41 detik.Kata kunci: IoT, Sistem Tertanam, OTA, DevOps, ESP8266 ABSTRACTDevOps drives the acceleration of system development. However, the concrete evidence of its application in embedded systems is not sufficient. One of the causes is difficulty in the deployment process on the device. Firmware update using an Over-The-Air (OTA) mechanism is allowed by the IoT concept that connects embedded systems into a network. This paper is proposing a DevOps infrastructure for embedded system development. Proposed infrastructure using ESP8266 for the hardware and PlatformIO, GitHub, and Travis CI for the DevOps environment. Testing the proposed system is done by changing the user requirements that are applied to the hardware. The DevOps stages from building and test, release, and deployment have automatically been done. The system is also able to detect developer errors in writing source code. The average time of the whole process on trial was 77.21 seconds. The build and test process dominates the processing time with an average of 77.21 seconds and the deployment time is relatively short with an average of 1.41 seconds.Keywords: IoT, Embedded System, OTA, DevOps, ESP8266

Orientation-Disturbing Magnetic Treatment Affects the Pigeon Opioid System

Keeping homing pigeons in an oscillating magnetic field of low intensity is known to increase the scattering of initial bearings and/or their deflection towards a specific direction. To determine whether these effects on orientation are the outcome of direct interference with the birds' navigational mechanism or are the side-effect of problems in another biological system, experiments were performed to test whether the same effects could be induced by non-magnetic treatments. The initial orientation of pigeons treated with the prototypic opiate antagonist naloxone (1 mg kg−1) displayed similar disturbances to those observed in magnetically treated birds. In both cases, the orientation was significantly different from that of control birds. The concentration and affinity of the brain's μ-opiate receptors were then assessed in magnetically treated birds by using [3H]dihydromorphine as a ligand. The concentration of jij-opiate receptors fell significantly in these birds, whereas the affinity of the receptors was unaffected. We conclude that it appears improbable that the navigational mechanism of pigeons is directly influenced by magnetic treatments. What these do seem to produce is a lack of compensation for the stress experienced by pigeons subjected to a test release