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Server (Go)

Development/Design

[AWS] How to manage access restrictions on text-to-speech files using S3 signed URLs.

A pre-signed URL provides temporary access to an object in a cloud storage service (e.g. Amazon S3); this URL is signed with specific permissions and an expiry date, allowing the user to securely download or Uploading.
application(Flutter)

[Flutter × Go × ESP32] How to add mute function to Mia.

After the release of the beta version of Mia, several users who actually used it asked for a 'no talking mode' for the frequency of talking, so the implementation of this feature is described in this report. For reference, we looked at Alexa and found that mute (in this case, goodnight mode) was indeed displayed on the home screen with a toggle icon.
Development/Design

[Golang] Practice of Test-Driven Development: From Migration File Creation to SQL Injection Countermeasures

Describes test-driven development in Go language, including migration file creation, SQL injection countermeasures and actual testing methods using dockertest. testutils.RunMySQLContainer function is called to start the MySQL container and connect to the database. RunMySQLContainer function to start the MySQL container and connect to the database.
Development/Design

[gRPC] Create a .proto file, compile it, and use it with the Go language.

Protocol Buffers (protobufs) are Interface Definition Languages (IDLs) used in gRPC to transmit data in smaller sizes and at a faster rate than traditional formats such as JSON and XML. Create a .proto file to define messages and gRPC methods