キャッシュ

• 読み: キャッシュ
• ローマ字: kyasshu
• 発音: /kja.s.shu/

意味

Cache — stored data that can cause apps or websites to behave strangely or slow things down.

A loanword from English 'cache,' キャッシュ in everyday tech conversation refers to the temporary data stored by browsers, apps, and operating systems. It is most commonly encountered as the target of troubleshooting advice: 「キャッシュを消してみて」 (try clearing the cache) is one of the most universally given fixes for app problems in Japan. Note that キャッシュ also means 'cash (money)' in Japanese — context distinguishes the two.

例文

1. アプリ重いならキャッシュ消してみたら？
2. ブラウザのキャッシュをクリアしたら表示が直った。
3. キャッシュが溜まりすぎてスマホの容量がやばい。

使い方ガイド

場面: tech support, everyday conversation, social media

トーン: practical, troubleshooting

正しい言い方

• とりあえずキャッシュ消してみて、それで直ることが多いから。 (Try clearing the cache first — that fixes it most of the time.)
• キャッシュが原因で古い情報が表示されてた。 (Old info was showing up because of the cache.)

避ける言い方

• キャッシュとクッキーを混同しない — キャッシュは一時ファイル、クッキーはサイトごとの保存データ (Don't confuse キャッシュ with クッキー — cache is temporary files, cookies are per-site saved data)

よくある間違い

• Confusing キャッシュ (cache) with キャッシュ (cash/money) — both are written the same way; rely on context
• Assuming clearing the cache always fixes every problem — it's a first step, not a cure-all

起源と歴史

Borrowed from English 'cache' (computing). The term became common in Japanese consumer tech vocabulary in the 2000s as smartphones and web browsers became ubiquitous. The advice to clear one's cache became a standard first-line tech support response.

文化的背景

時代: 2000s onwards

世代: All ages

社会的背景: Universal

地域メモ: Used across all of Japan. Clearing the cache is so commonly advised that it has become something of a running joke online.