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49 lines
1.6 KiB
Go
49 lines
1.6 KiB
Go
// Copyright GoFrame Author(https://goframe.org). All Rights Reserved.
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//
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// This Source Code Form is subject to the terms of the MIT License.
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// If a copy of the MIT was not distributed with this file,
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// You can obtain one at https://github.com/gogf/gf.
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package gdb
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import (
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"github.com/gogf/gf/internal/intlog"
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"time"
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)
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// Cache sets the cache feature for the model. It caches the result of the sql, which means
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// if there's another same sql request, it just reads and returns the result from cache, it
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// but not committed and executed into the database.
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//
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// If the parameter `duration` < 0, which means it clear the cache with given `name`.
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// If the parameter `duration` = 0, which means it never expires.
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// If the parameter `duration` > 0, which means it expires after `duration`.
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//
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// The optional parameter `name` is used to bind a name to the cache, which means you can
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// later control the cache like changing the `duration` or clearing the cache with specified
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// `name`.
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//
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// Note that, the cache feature is disabled if the model is performing select statement
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// on a transaction.
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func (m *Model) Cache(duration time.Duration, name ...string) *Model {
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model := m.getModel()
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model.cacheDuration = duration
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if len(name) > 0 {
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model.cacheName = name[0]
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}
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model.cacheEnabled = true
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return model
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}
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// checkAndRemoveCache checks and removes the cache in insert/update/delete statement if
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// cache feature is enabled.
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func (m *Model) checkAndRemoveCache() {
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if m.cacheEnabled && m.cacheDuration < 0 && len(m.cacheName) > 0 {
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var ctx = m.GetCtx()
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_, err := m.db.GetCache().Remove(ctx, m.cacheName)
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if err != nil {
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intlog.Error(ctx, err)
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}
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}
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}
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