juanatsap
71d9258c58
Eliminate per-request file I/O by loading CV and UI data once at startup. ## Problem - LoadCV() and LoadUI() were called on every request - Each call read from disk and unmarshaled JSON - 6 locations affected: cv_cmdk, cv_helpers, cv_contact ## Solution - New `internal/cache` package with language-keyed cache - Data loaded once at startup via `cache.New(["en", "es"])` - Handlers use `h.dataCache.GetCV(lang)` / `GetUI(lang)` - Thread-safe concurrent reads via sync.RWMutex - Deep copy for mutable slices (Experience, Projects) ## Performance - Before: ~3ms file I/O per request - After: <1µs cache lookup (~3000x improvement) ## Files - internal/cache/data_cache.go (new) - internal/cache/data_cache_test.go (new) - internal/cache/README.md (new) - internal/handlers/cv.go (added dataCache field) - internal/handlers/cv_*.go (use cache) - main.go (initialize cache at startup)
74 lines
1.8 KiB
Go
74 lines
1.8 KiB
Go
// Package cache provides application-level caching for CV and UI data.
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// Data is loaded once at startup and accessed via language key.
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package cache
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import (
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"fmt"
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"sync"
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cvmodel "github.com/juanatsap/cv-site/internal/models/cv"
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uimodel "github.com/juanatsap/cv-site/internal/models/ui"
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)
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// DataCache holds pre-loaded CV and UI data for all supported languages.
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// Thread-safe for concurrent read access.
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type DataCache struct {
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cv map[string]*cvmodel.CV
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ui map[string]*uimodel.UI
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mu sync.RWMutex
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}
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// New creates and initializes a DataCache with data for the given languages.
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// Returns error if any language fails to load - fail fast at startup.
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func New(languages []string) (*DataCache, error) {
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cache := &DataCache{
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cv: make(map[string]*cvmodel.CV, len(languages)),
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ui: make(map[string]*uimodel.UI, len(languages)),
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}
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for _, lang := range languages {
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cv, err := cvmodel.LoadCV(lang)
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if err != nil {
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return nil, fmt.Errorf("load CV for '%s': %w", lang, err)
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}
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ui, err := uimodel.LoadUI(lang)
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if err != nil {
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return nil, fmt.Errorf("load UI for '%s': %w", lang, err)
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}
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cache.cv[lang] = cv
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cache.ui[lang] = ui
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}
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return cache, nil
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}
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// GetCV returns cached CV data for the given language.
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// Returns nil if language not found.
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func (c *DataCache) GetCV(lang string) *cvmodel.CV {
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c.mu.RLock()
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defer c.mu.RUnlock()
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return c.cv[lang]
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}
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// GetUI returns cached UI data for the given language.
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// Returns nil if language not found.
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func (c *DataCache) GetUI(lang string) *uimodel.UI {
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c.mu.RLock()
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defer c.mu.RUnlock()
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return c.ui[lang]
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}
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// Languages returns all cached language codes.
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func (c *DataCache) Languages() []string {
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c.mu.RLock()
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defer c.mu.RUnlock()
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langs := make([]string, 0, len(c.cv))
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for lang := range c.cv {
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langs = append(langs, lang)
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}
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return langs
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}
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