fix cache cleaning
fix cache cleaning

AndreiKrutikov/TinyDBMS,AndreiKrutikov/PsiDB,AndreiKrutikov/TinyDBMS,AndreiKrutikov/TinyDBMS,AndreiKrutikov/PsiDB,AndreiKrutikov/PsiDB,AndreiKrutikov/TinyDBMS,AndreiKrutikov/PsiDB