TIL
AgentCore Memory CLI parameter names differ from the documentation schema
batch-update-memory-records requires timestamp, and memory-strategies uses semanticMemoryStrategy / namespaceTemplates — not what the docs suggest.
1 min read
TIL
Today I Learned — Daily learnings
TIL
A dotfiles test script can verify file diffs, not just existence
How to write a test script that validates dotfiles deployment in three stages: file existence, permissions, and content diffs. Includes an exclusion pattern for Git config's [user] section.
TIL
Lambda Durable Functions IAM action is CheckpointDurableExecution (singular)
Some docs reference CheckpointDurableExecutions (plural), but the actual required action is singular. Plural form causes permission errors.
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Lambda Durable Functions SDK DurableContext cannot be named-imported in .mjs
import { DurableContext } from '@aws/durable-execution-sdk-js' throws SyntaxError at runtime. Only import withDurableExecution for .mjs deployments.
1 min read
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Rendering Mermaid diagrams in Next.js requires client-side dynamic import
The mermaid library depends on DOM APIs like getBBox, so it can't run in Server Components. Use dynamic import in useEffect and next-themes resolvedTheme for dark mode support.
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rehype-pretty-code replaces language-mermaid className with data-language attribute
When detecting mermaid code blocks in MDX components, className='language-mermaid' won't work because rehype-pretty-code transforms it to a data-language attribute and wraps content in span trees.
1 min read
TIL
Naming Kiro skills consistently with existing patterns improves discoverability
When adding a page creation skill, choosing page-guide over add-page maintained the {type}-guide naming pattern used by post-guide and til-guide.
1 min read
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rehype-pretty-code breaks on code blocks without a language identifier
Omitting the language on fenced code blocks in MDX causes rehype-pretty-code to produce broken HTML. Always specify a language like text for non-code content.
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Next.js 'use cache' directive enables component-level caching
The 'use cache' directive lets you cache the output of any async function — not just fetch — replacing the old fetch-level cache options with a more flexible approach.
TIL
Fix Markdown table column wrapping with CSS white-space: nowrap
Short Japanese text in Markdown table columns was wrapping vertically. Widening the separator dashes didn't help — applying white-space: nowrap in .prose CSS was the fix.