Tech-Reader.blog

  The Secret Life of Go: Interfaces in Practice # go # coding # programming # softwaredevelopment How to replace three redundant functions with one  io.Reader . Chapter 18: The Universal Adapter The archive was quiet, except for the rhythmic  thrum-click  of the pneumatic tube system delivering requests to the front desk. Ethan had his headphones on, typing furiously. "You are typing very fast," Eleanor observed, pausing at his desk with a cart full of magnetic tapes. "That usually means you are copying and pasting." Ethan pulled off his headphones, looking guilty. "I'm building a log analyzer. It needs to read logs from three places: a local file archive, a live HTTP stream from the server, and sometimes just a raw string for testing." He pointed to his code. "I wrote three functions." // 1. Read from a file func AnalyzeFile ( filename string ) error { f , err := os . Open ( filename ) if err != nil { return e...

  AWS Bedrock Error: 'ValidationException' Due to Token Limit Exceeded # aws # bedrock # devops # cloud A diagnostic guide to resolving Bedrock invocation failures caused by prompts that exceed a model’s maximum token constraints. Problem An AWS Bedrock invocation fails with a  ValidationException  when submitting a large prompt. Typical symptoms: IAM permissions are correct Model access is enabled Region and model ID are valid Small prompts succeed Larger prompts fail immediately, before inference No tokens are generated. Clarifying the Issue This error is  not  related to IAM, model access, region, or throttling. It occurs when the  total token count of the request exceeds the maximum context window supported by the model . In AWS Bedrock: Every model has a  fixed maximum context size Input tokens  plus  expected output tokens must fit within that limit Validation happens  before inference , so the request is rejected immediately This ...

  AWS Bedrock Error: 'ValidationException' When Invoking AWS Bedrock # aws # bedrock # devops # cloud A diagnostic guide to resolving Bedrock invocation failures caused by invalid request payloads or provider-specific schema mismatches. Problem An AWS Bedrock invocation fails with an error similar to: ValidationException: The provided request is invalid. Common symptoms: IAM permissions are correct Model access is enabled Region and model ID are valid Invocation fails immediately, before inference No tokens are consumed. Clarifying the Issue This error is  not  related to IAM, model access, region, or quotas. It occurs when the  request payload does not match the schema expected by the selected model . In AWS Bedrock: Payload schemas are  provider-specific Payload schemas are  model-specific A request can be valid JSON and still be  semantically invalid Bedrock validates the request  before  sending it to the model runtime. Why It Matters Thi...