Package com.jms.socialmedia.cache

Class AbstractCachingService

java.lang.Object

com.jms.socialmedia.cache.AbstractCachingService

Direct Known Subclasses:

AbstractCodecCachingService, AbstractHeapCachingService, CachingServiceWithMetrics

public abstract class AbstractCachingService
extends Object

Constructor Summary

Constructors

Constructor	Description
AbstractCachingService()

Method Summary

Modifier and Type	Method	Description
protected void	commentsCacheHit()
protected void	commentsCacheMiss()
abstract void	editCommentInCache(int commentId, String text)	Either edits the text of the Comment in the Cache, or invalidates the Comment
abstract void	editPostInCache(int postId, String text)	Either edits the text of the Post in the Cache, or invalidates the Post
abstract Comment	getCommentFromCache(int commentId)
abstract Collection<Comment>	getCommentsFromCache(int postId)
Collection<Comment>	getCommentsFromCacheOrSupplier(int postId, Supplier<Collection<Comment>> supplier)
abstract Post	getPostFromCache(int postId)	Retrieves a Post from cache if present
Post	getPostFromCacheOrSupplier(int postId, Supplier<Post> supplier)
User	getUserSessionCacheOrSupplier(String sessionKey, Supplier<User> supplier)
abstract User	getUserSessionFromCache(String sessionKey)
abstract void	likeCommentInCache(int commentId, int userId)	Either adds a Like to the Comment in the Cache, or invalidates the Comment
abstract void	likePostInCache(int postId, int userId)	Either adds a Like to the Post in the Cache, or invalidates the Post
protected void	postCacheHit()
protected void	postCacheMiss()
abstract void	putCommentIntoCache(Comment comment)
abstract void	putCommentsFromPostIntoCache(int postId, Collection<Comment> comments)
abstract void	putPostIntoCache(Post post)
abstract void	putUserSessionIntoCache(String sessionKey, User user)
abstract void	removeCommentFromCache(int commentId)
abstract void	removePostFromCache(int postId)	Removes a Post and all of its Comments from cache
abstract void	removeUserSessionFromCache(String sessionKey)
abstract void	unlikeCommentInCache(int commentId, int userId)	Either removes a Like in the Comment in the Cache, or invalidates the Comment
abstract void	unlikePostInCache(int postId, int userId)	Either removes a Like in the Post in the Cache, or invalidates the Post
protected void	userSessionCacheHit()
protected void	userSessionCacheMiss()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AbstractCachingService

public AbstractCachingService()

Method Detail

getPostFromCache

public abstract Post getPostFromCache(int postId)

Retrieves a Post from cache if present

Parameters:

postId - ID of Post

Returns:

Post or null

editPostInCache

public abstract void editPostInCache(int postId,
                                     String text)

Either edits the text of the Post in the Cache, or invalidates the Post

Parameters:

postId - ID of the Post being edited

text - New text of the Post

putPostIntoCache

public abstract void putPostIntoCache(Post post)

removePostFromCache

public abstract void removePostFromCache(int postId)

Removes a Post and all of its Comments from cache

Parameters:

postId -

likePostInCache

public abstract void likePostInCache(int postId,
                                     int userId)

Either adds a Like to the Post in the Cache, or invalidates the Post

Parameters:

postId - ID of the Post being liked

userId - ID of the User the liked the Post

unlikePostInCache

public abstract void unlikePostInCache(int postId,
                                       int userId)

Either removes a Like in the Post in the Cache, or invalidates the Post

Parameters:

postId - ID of the Post being unliked

userId - ID of the User the unliked the Post

getCommentsFromCache

public abstract Collection<Comment> getCommentsFromCache(int postId)

getCommentFromCache

public abstract Comment getCommentFromCache(int commentId)

editCommentInCache

public abstract void editCommentInCache(int commentId,
                                        String text)

Either edits the text of the Comment in the Cache, or invalidates the Comment

Parameters:

commentId - ID of the Comment being edited

text - New text of the Comment

putCommentIntoCache

public abstract void putCommentIntoCache(Comment comment)

putCommentsFromPostIntoCache

public abstract void putCommentsFromPostIntoCache(int postId,
                                                  Collection<Comment> comments)

removeCommentFromCache

public abstract void removeCommentFromCache(int commentId)

likeCommentInCache

public abstract void likeCommentInCache(int commentId,
                                        int userId)

Either adds a Like to the Comment in the Cache, or invalidates the Comment

Parameters:

commentId - ID of the Comment being liked

userId - ID of the User the liked the Comment

unlikeCommentInCache

public abstract void unlikeCommentInCache(int commentId,
                                          int userId)

Either removes a Like in the Comment in the Cache, or invalidates the Comment

Parameters:

commentId - ID of the Comment being unliked

userId - ID of the User the unliked the Comment

getUserSessionFromCache

public abstract User getUserSessionFromCache(String sessionKey)

putUserSessionIntoCache

public abstract void putUserSessionIntoCache(String sessionKey,
                                             User user)

removeUserSessionFromCache

public abstract void removeUserSessionFromCache(String sessionKey)

getPostFromCacheOrSupplier

public Post getPostFromCacheOrSupplier(int postId,
                                       Supplier<Post> supplier)

getCommentsFromCacheOrSupplier

public Collection<Comment> getCommentsFromCacheOrSupplier(int postId,
                                                          Supplier<Collection<Comment>> supplier)

getUserSessionCacheOrSupplier

public User getUserSessionCacheOrSupplier(String sessionKey,
                                          Supplier<User> supplier)

postCacheHit

protected void postCacheHit()

postCacheMiss

protected void postCacheMiss()

commentsCacheHit

protected void commentsCacheHit()

commentsCacheMiss

protected void commentsCacheMiss()

userSessionCacheHit

protected void userSessionCacheHit()

userSessionCacheMiss

protected void userSessionCacheMiss()