1. How to maintain Hibernate cache consistency running two Java applications? stackoverflow.comOur design has one jvm that is a jboss/webapp (read/write) that is used to maintain the data via hibernate (using jpa) to the db. The model has 10-15 persistent classes with ... |
2. How do I make/develop Hibernate caching? stackoverflow.comHow do I make/develop Hibernate caching? |
3. JPA2 Hibernate caching stackoverflow.comI am trying to execute a simple test using Hibernate as the JPA provider |
4. why is org.hibernate.cache.Cache deprecated? stackoverflow.comNot only this but also org.hibernate.cache.Cache.CacheProvider is also deprecated. If these are then how are we supposed to create our own custom Caching Solutions ? Alternate method ? |
5. Where and how to check that hibernate cache really works stackoverflow.comI am new in the hibernate's cache area.
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6. Caching in Hibernate coderanch.comIts got two levels of caching. The first level the implicit Session caching - you access the same object in the same session you'll see a cached version (which is safe, because a Session is transaction-scoped). Forcing Session caching to be ignored can be done by calling flush() on the Session. The second level cache requires you pick a third party ... |
7. Hibernate iternals - Cache and Diff coderanch.comHi all, maybe there is someone, who can answer my Hibernate related questions. 1. How does Hibernate detect changes in Object graphs (diffs) to generate appropriate SQL-Statements. E.g. if OrderItem instance is removed from Order list container ? 2. Is it possible to use only the cache implementation classes in order to create an object cache for e.g. Rich Client purposes ... |
8. Hibernate cache doubt.... coderanch.comI get the following error when i try to use a cache. org.hibernate.HibernateException: could not instantiate CacheProvider: net.sf.hibernate.cache.OSCacheProvider at org.hibernate.cfg.SettingsFactory.createCacheProvider(SettingsFactory.java:265) at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:184) at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:1497) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1041) at hibernate.util.HibernateUtil. |
9. Hibernate Caching coderanch.com |
10. Hibernate Cache coderanch.comOriginally posted by uma prasath: Is is possible to automatically update the dataobjects in memory (when cached), whenever an update occurs in database by another user? You need to define your terms. Recall that Hibernate is typically configured with two-level caching. The first level is session-caching, and it would be too expensive and too much of a scaling bottleneck (not to ... |
11. Programmatic cache setting in Hibernate coderanch.com |
12. Hibernate Caching coderanch.comHi Kri, The difference is when and where the data gets cached. http://www.devx.com/dbzone/Article/29685/ If you look at the above website and under the Hibernate Caching heading there is a nice explanation of First-level vs. Second-level caching. First-level attaches the cached data to the session. Second-level attaches the cached data to the session factory. So, personally I would recommend using Second-level caching ... |
13. When should Hibernate cache be used? coderanch.comIf I load the data from the DB into the Hibernate classes and let Hibernate cache them to improve the performance, it may create an inconsistency problem when someone updates the DB using a different tool (such as SQLPlus). How do Hibernate or other OR frameworks handle this type of problem? [ March 25, 2008: Message edited by: Elizabeth King ] ... |
14. Hibernate Cache coderanch.com |
15. Hibernate cache ... coderanch.com |
16. How many statements can be cached by hibernate?.. coderanch.com |
17. hibernate cache coderanch.comHibernate only uses a query cache if you configure it to do so, and if you do you also need to provide a second level cache. The query cache does not store the state of your results it stores a result set of identifiers, the state is held in the second level cache. Using the query cache and the second level ... |
18. Hibernate Cache coderanch.comHi I have an app which used Hibernate. I am persisting everything via a session.saveOrUpdate(parentObject) SO say parentObject has a List of ChildObjects. if i delete, chnage or update a particular child object the changes are persisted to DB. But when i got back to the first page of the application where it loads the parent object and its children objects ... |
19. Hibernate Caching coderanch.comI realize that the book cannot possibly cover every issue that might present itself, but given that we use Hibernate pretty heavily at work, I'm wondering what kind of recipes the book covers with regards to caching. Does it discuss specific solutions or address caching in general? Does it discuss how to tune the caching for different objects in the same ... |
20. hibernate caching levels coderanch.com |
21. How does Hibernate implement caching? coderanch.comHi all, I am wondering exactly how Hibernate caches data for you. For example if you get a result set for a screen and display that to the user and then the user comes back to that screen a few clicks later, does Hibernate go back to the DB to get the data? Thanks for any input, Jehan |
22. hibernate cache coderanch.comMathew, Cache is an inconsistent store of information that can be used for scalability and to improve performance. Hibernate provides three kinds of Cache mechanism. 1. Session ( By Default, cannot be turned off). 2. SessionFactory ( Second level cache). 3. Query cache. First level of cache is nothing but org.hibernate.Session. This will track all the dirty states of POJOs being ... |
23. Hibernate caching- Which caching to use ? coderanch.comHi All, I'm working on java application, that runs in tomcat and uses hibernate orm to query oracle database. There are many tables in which data is rarely changed. These data are only changed by a third party application. (Not the one on which I'm working). I need to put these tables' data in cache. Which is the best cache to ... |
24. hibernate cache behaviour forum.hibernate.orgHi, I have the following use case: I've some entity cofigured to use second level cache (ehcache is the provider). Is persisting a new instance of that entity will automatically update the cache with it (for future select using pk)? A check I made says no - I saw that the first fetch after the persist still hit the db, and ... |
25. Timestamps cache forum.hibernate.orgIs it possible to configure timestamps cache only for selected entities? I want to used query cache only for few entities which are update very rarely. In the system there are a lot of other entities which are modified very often. After switching query cache on I noticed that timestamps are handle for every entity (even it is not cachable). IMO ... |
26. Cache is not alive forum.hibernate.orgDear all, I have an application and every morning after leaving the application idle I see the following error when trying to browse.. java.lang.IllegalStateException: The Language Cache is not alive. at net.sf.ehcache.Cache.checkStatus(Cache.java:1204) at net.sf.ehcache.Cache.get(Cache.java:650) at net.sf.ehcache.hibernate.EhCache.get(EhCache.java:82) at org.hibernate.cache.ReadWriteCache.put(ReadWriteCache.java:153) at org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:159) at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:854) at org.hibernate.loader.Loader.doQuery(Loader.java:729) at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236) at org.hibernate.loader.Loader.loadEntity(Loader.java:1860) at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:48) at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:42) at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:3049) at org.hibernate.event.def.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:399) at org.hibernate.event.def.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:375) at org.hibernate.event.def.DefaultLoadEventListener.load(DefaultLoadEventListener.java:139) at ... |
27. Understanding Hibernate caching forum.hibernate.orgHi All, I'm using Hibernate with MySQL and Spring. I put some timing code around one of my queries (an HQL from xxx query) to see how long it was taking. I saw the first call take about 300ms, then subsequent calls where all around 20ms. I don't have 2nd level caching enabled, so what could be causing the subsequent queries ... |
28. Hibernate Caching? forum.hibernate.orgHi, I am using Hibernate in a Java Swing application. I have found that when I update the database data directly (w/o changes from the Swing application), the Swing application does NOT reflect these changes till re-started. Is this something to do with Hibernate caching? Do I need to set some hibernate parameter so that data manipulated outside of the application ... |
29. Caching with Hibernate and JPA Discussion forum.hibernate.orgHi All, I am using hibernate+jpa for the database layer in my project along with Struts and Spring. The application server is websphere application server 6.1 and database being used is DB2. The project was in good condition until we realized that the performance of the database is not really good. Later on I found out that we are using some ... |
30. Howto: domain class hierarchy and caching forum.hibernate.orgHi folks, we have a domain model with a BaseDomainObject and several derived subclasses. The BaseDomainObject contains common attributes like id and version. This hierarchy seems to us to be an quite common one, isn't it? Now we want to implement a 2nd level cache (EHCache). How can we specify different cache strategies for each subclass? It's not applicable to define ... |
31. Hibernate Cache forum.hibernate.org |
32. many-to-one and cache forum.hibernate.orgHi using Hibernate 3.5.1 Is many-to-one cacheable and if so how? (Please provide document link so I can go look) Not sure what to look for. I have 2 objects A and B |
33. Cache never expires forum.hibernate.orgHi all, I have set a tipical Hibernate config, using this configurations: AnnotationConfiguration configuration... configuration.setProperty(Environment.DIALECT, Oracle10gDialect.class.getName()); configuration.setProperty("hibernate.show_sql", "true"); configuration.setProperty("hibernate.transaction.factory_class", "org.hibernate.transaction.JDBCTransactionFactory"); configuration.setProperty("hibernate.cache.provider_class", "org.hibernate.cache.EhCacheProvider"); configuration.setProperty("hibernate.cache.provider_class", "org.hibernate.cache.EhCacheProvider"); configuration.setProperty("hibernate.cache.use_query_cache", "true"); configuration.setProperty("hibernate.cache.use_second_level_cache", "true"); And this ehcache.xml: |
34. Hibernate vs Java Caching forum.hibernate.org |
35. Help! Understanding Hibernate Caching.. forum.hibernate.orgHello Hibernate User.. I have two web application that is using the same Oracle 10g database. One application-A is able to update/save/delete "Messages" into a table. The other application-B is able to retrieve the "Messages" and display the content of this message into a webpage. I have been struggling trying to setup application-B to retrieve updated "Messages" after application-A makes changes ... |
36. How to do this kind of caching using Hibernate? forum.hibernate.org |
37. Replicating org.hibernate.cache.CacheKey forum.hibernate.orgI have discovered a strange case when trying to replicate a Hibernate 2nd level cache key on object update. The cache key structure is like this: cacheKey = {org.hibernate.cache.CacheKey} |- key = {my.own.serializable.class} |- type = {org.hibernate.type.ComponentType} | |- typeScope = {org.hibernate.type.TypeFactory$TypeScopeImpl} | | |- factory = {org.hibernate.impl.SessionFactoryImpl} | |- propertyNames = {...} | |- propertyTypes = {...} | |- propertyNullability ... |
38. cache probem forum.hibernate.orgI have not specied cache in cfg file but application is throwing error java.lang.NoClassDefFoundError: net/sf/ehcache/CacheException,for your understanding i am adding my cfg code and i have added jar files: 01.antlr-2.7.6 02.commons-collections-3.1 03.dom4j-1.6.1 04.hibernate3 05.mysqlconnector 06.javassist-3.4.GA 07.jta-1.1 08.slf4j-api-1.5.6 09.slf4j-simple-1.5.6 cfg code: |
39. What's happening with caching? forum.hibernate.org |
40. Hibernate and Cache forum.hibernate.org2.1 has a pluggable cache interface. In either case, there is no need to put anything on top of HIbernate, it's all built in and configurable through the Hibernate config files. The default cache is JSC which I've used and works fine for me, but I deploy on only one server. Using the JSC cache increase performance an order of magnitude ... |
41. Caching forum.hibernate.orgHi All, I am writing a web application that allows the users to browse many listings of items available for them to order. The items hardly ever change and rarely updated, so I need the item to be readily available and ready at all time. I wrote a small basic caching mechanism but would like to learn how to hook that ... |
42. How to force Hibernate to get record only from its cache forum.hibernate.orgHi, guys, I understand that Hibernates caches records that it already retrieved. Next time when it needs to retrieve a record, it looks for it in the cache first, if it's not in there, query the database. How to force Hibernate to look for the record ONLY in the cache. If it's not in there, forget it, don't query the database. ... |
43. Is caching really good (discussion)? forum.hibernate.orgI have some doubts on caching and would like to dicuss them with the Hibernate community. 1) If we have a session cache level and supposing I have session instance per method, then where are the cached objects so they can be used between sessions? 2) If the cache is never aware of changes made to the persistent store by another ... |
44. WebSphere caching across clusters forum.hibernate.orgHi, I am looking at using Hibernate to replace EJBs within a J2EE application that is running on a 2 machine cluster. The application has almost complete control of the database, thus caching of the data is very feasible and almost a requirement. After reading most of the documentation I could find and browsing around a bit I can't see how ... |
45. How to use Cache in Hibernate? forum.hibernate.orgHi everyone: I have write several web application using hibernate. They work well. But now I want to prompt it's performance.So I want to use hibernate Cache. In hibernate2.1, there are OSCache, SwarmCache, JBoss TreeCache.... .But how to use them? There is too small example in the web. Could someone give me a good hibernate example using Cache? Thaks in advance! ... |
46. testCaches (net.sf.hibernate.cache.CacheTest) fails forum.hibernate.orgHello, I have persistent problems with the test. I haven't done anything to configure JCS, so I don't think I'm using it. How can I have the system skip this test so my suite runs clean? Thanks! Reid P.S. I'm running the whole suite, from the project level, in Eclipse, so it automatically includes the test cases found in Jars. |
47. Cache design help requested forum.hibernate.orgSeeking design advice on the following portion of my design: Relevant portions of classes: public class Person { String firstName; String lastName Address address; Company company; } public class Contact extends Person{} public class User extends Contact{ String username; } public class PhoneNbr{} public class Address{} public class Company{ String companyName; } I want to L2 cache all defined User objects ... |
48. cache forum.hibernate.org |
49. Caching Scheme, what is being Cached forum.hibernate.org |
50. How does Hibernate Cache forum.hibernate.orgAre there any articles out there describing how Hibernate does Caching? Or are there different parameters to turn caching on/off. I am trying to understand how/when Hibernate knows when to go back to the database for reads versus how it knows when it can just return cached information. In my example, I always see it issuing the select statements. For example ... |
51. Per-class caching request forum.hibernate.orgI'd really like to see this: |
52. using cache forum.hibernate.org |
53. cache on the client side forum.hibernate.orgWell you can do any kind of caching, keep a reference to previously loaded objects, plug in OSCache or whatever. Actually whenever you just display something to the user you are in practice allready doing "caching". Be aware however that by doing such things you will run into really ugly data staleness problems in a multi-user environment. Doing cache invaldiation is ... |
54. Caching forum.hibernate.org |
55. Using Hibernate for caching forum.hibernate.orgHi, I am trying to find if I can read-through a DB table using Hibernate : On Application startup, huge number of records(millions) should be fetched from the database and kept in cache. The data is read-only.(Updated only on a weekly basis) I am thinking of using hibernate to fetch the records. But, I am not sure how to do the ... |
56. Hibernate Cache forum.hibernate.orgHi, i hava a new question : This is my fonction : public List getUtilisateurs() throws DAOException { List liste=null; Session session=getSession(); try { Transaction tx=session.beginTransaction(); liste=session.find("from Utilisateur u order by upper(u.nom)"); tx.commit(); } catch (HibernateException e) { }finally{ closeSession(); } return liste; } My question : Is the return list totaly independent of the hibernate cache or must i create ... |
57. cache does't work forum.hibernate.orgBasically, the cache only works for when loading by object id, i.e. session.load(...) and lazy loading. Hibernate doesn't have some magic HQL -> return objects from the cache logic, instead all HQL queries get translated to SQL and are run against the database. The trick to making effective use of the cache is to try to structure your application more along ... |
58. Cache contents timing-out? forum.hibernate.org |
59. Can hibernate destory all cache on-the-fly? forum.hibernate.orgHi, hibernate guru & fans Recently, we encountered a tough problem in a project. The customer want to modified the data manually(bypass the application). Unfutunately, these data are cached. In order to solve the headache to synchronize cache with the data in database, we deside to simply destroy all cache and provide an button to let the user trigger this operation. ... |
60. What if I cache EVERYTHING? forum.hibernate.orgLooking for some caching guidelines / advice / patterns / etc. I'm using EHCache with Hibernate and it works very well. In fact, I haven't had a single problem with it. I am using read-only caching for all of my immutable classes, query caching for my lookup/dropdown boxes, and I have turned on read-write caching for a few central classes. I'm ... |
61. Cache feature requests forum.hibernate.orgHi, I wanted to present some cache feature ideas I had to present them here before putting them in JIRA, so if they are easily rejected I don't have to waste Gavin's time to reject them. ;-) 1) Method Query.setCacheable(Class) or Query.setSecondLevelCacheable(Class). If a given Object of type Class were loaded in a query, it would be added to second level ... |
62. Cache? forum.hibernate.org |
63. Cache clean up forum.hibernate.orgHi all, I am using EHCache in my current project, and the cache in Hibernate creates individual threads for the caches. When I shut down the application, those threads still remain active. If I install a new version of the application, new threads are created again. Is there some way that we can clean up those threads? Thanks for the help. ... |
64. cache + webapps forum.hibernate.org |
65. hibernate-configuration-2.0.dtd class-cache and .... forum.hibernate.org |
66. Cache in Hibernate forum.hibernate.orgBased on the documentation, I saw that Session maintains a cache of objects that have been accessed by it. And if you do a closeSession(), the cache is no longer available. However if you do a session.disconnect() and reconnect(), the cache would be available. So is it advisable for maintaining the same session for a web-application that may receive concurrent requests ... |
67. Caching Implementation forum.hibernate.orgHi: We've done a couple of PoC on Hibernate and are convinced of it's power. However, we wanted to better understand how Caching works in Hibernate before going ahead in utilizing it for our project. Let's say we have 100 Million Records in the database and we have 250 concurrent users firing different queries. Our questions are the following: 1.) Does ... |
68. choosing cache implementation forum.hibernate.orgHi: I am using hibernate-2.1 with Weblogic 8.1 & Oracle 8i. I am using the hibernate transaction API. Hibernate provides the option of choosing among several cache providers. Are there any metrics avalaible to base my decision on ? or which cache have the forum members found most useful for similar configuration. tia splash |
69. Cache or not cache? forum.hibernate.org |
70. caching empty results forum.hibernate.orgMy application is mainly content based with no writes to the database from the runtime application. Because of this we use a high level of caching through hibernate. In fact, the project requirements state that if the database is unavailable, the application should still run. The caches use ehcache and are set to live forever. Theoretically if all the pages are ... |
71. Prepare Statement Caching forum.hibernate.orgkjsanchez Post subject: Posted: Wed Sep 15, 2004 7:38 pm Beginner Joined: Thu May 20, 2004 3:40 pm Posts: 33 Hi bertrand, Here is how: Please let me know if you have any questions. Thanks Again, kjsanchez Each tablemapping.xml has named sql query like |
72. would really appreciate caching advice forum.hibernate.orgI need a clustered cache and have tried SwarmCache and OSCache. Either both of these do not send a message when an object is updated or I'm doing something wrong. I'm assuming that I'm doing something wrong. Would someone please give me a good example of how to configure either OSCache or SwarmCache to have updates and deletes clear the necessary ... |
73. Caching forum.hibernate.orgHi, I have a problem using hibernate cache (default-cache). In two points of the program I try to get a list of objects from one type (sample FFF with 150 reg) . If i only pass in one poit, it's ok. I can pass one, two or many times that the objects in memory in the end is always the same ... |
74. Additional indices for the cache? forum.hibernate.orgSyntetic primary keys are widely used and they make sense. In some circumstances they are slow, let me describe an example. If you have a user management for a web site. The natural key might be the login name. The syntetic key might be a user identifier (number). If you validate a user you have to go to the database even ... |
75. About Hibernate cache forum.hibernate.orgIn setting a bidirectional assoiation, for example Child/Parent relation, if only set one direction: child.setparent(parent) // leave out code: parent.addchild(child) session.save(child) Then retrieve the assoiation: child.getParent() is OK parent.getChildren() is empty. And the data in DB ,"parent_id" is correct. But if close current session, and open a new seesion, parent.getChildren() returns is correct. I think when the save operation is successful, ... |
76. Can't figure out caching forum.hibernate.orgBeginner Joined: Mon May 03, 2004 1:25 pm Posts: 31 I'm trying to use caching to reduce the number of sql calls, but I'm missing something. I creating a query to load the weighting treatment objects and then a second query to load the geoGroups [which have a one-to-many] with weighting Treatments. But when I run the app, the relationship sql ... |
77. strictly parted cache? forum.hibernate.orgRegular Joined: Thu Dec 11, 2003 4:14 pm Posts: 86 Location: Hibernate 3 + annotations, Oracle 9i, PostgreSQL 8.0, Java 1.5.0 I try to understand the caching (second level cache) - I already read the chapter in "hibernate in action". I also tried to find the answer here, but maybe I didnt manage to form the correct search query. Finally one ... |
78. [newbie]Hibernate caching? forum.hibernate.orgHibernate does not cache anything without you have told it ;) One way to tell it is to load all objects in have only one session (bad). You might also have enabled the second-level cache. Read the docs about session and cache handling. Hibernate In Action is also very much recommended for this. |
79. Caching forum.hibernate.org |
80. one-to-one caching not working forum.hibernate.org |
81. Caching with hibernate forum.hibernate.orgHi all, I am using object caching in my application.I am using ServletContext for this.But somebody has suggested me to use Apache JCS.I have read somewhere that JCS can be used with hibernate by making .ccf file etc. Can anybody suggest me some way or tutorial ,so that I can look into that. With regards, ajse. |
82. Hibernate Cache forum.hibernate.org |
83. How to user Hibernate with a pre-deployed tree cache? forum.hibernate.orgHi, I wondered if/how it is possible to configure Hibernate (3) to use a pre-deployed TreeCache. My point is the following: I want to use TreeCache as 2nd-level-cache in a JBoss clustered environment, but I don't want to define the exact network-parameters at packaging-time. Instead I think it would make sense if I could assume that there is a running TreeCache ... |
84. Using the cache forum.hibernate.org |
85. Caching with Hibernate 3.0 forum.hibernate.org |
86. Hibernate in Action left me guessing about caching... forum.hibernate.orgAll the names involved with cache are region names. Each part of the cache has its own region name. By default Hibernate sets region name to entity name (class name). So then you also set the (region) name in ehcache the same way. But you could say what ever you want: In hbm.xml: |
87. Is nonexistance cached? forum.hibernate.org |
88. Implications of cache expiry warning messages forum.hibernate.orgI get a number of 'An item was expired by the cache while it was locked' warning messages while performing long running processes. Can someone please tell me what the implication of these messages are? Do they mean that the integrity of my databse is at risk, or do they only have performance implications? Will I also see these warnings if ... |
89. Caching in Hibernate forum.hibernate.orgHi All, Currently we've a non-hibernate based architecture where we've implemented caching the result set at session level. In the architecture that we just started to work, we'll be using Hibernate. I've following questions regarding this. I would greatly appreciate any input on this. 1. We'll be running our application in Clustered environment and hence we'll use JBoss Cache. Per my ... |
90. Browse hibernate cache forum.hibernate.orgNeed help with Hibernate? Read this first: http://www.hibernate.org/ForumMailingli ... AskForHelp Hibernate version:3.0.5 Mapping documents: |
91. Hibernate cache does not work forum.hibernate.orgI did set up hibernate config: |
92. Multiple cache implementations forum.hibernate.orgHas anyone tried setting up more than one cache implementation for a hibernate application? It seems as if would be fairly straightforward to write a "composite cache provider" which allows you to configure for each cache region which cache implementation will actually be used. This would allow you, for example, you could have critical heavily updated data being cached using a ... |
93. fault-tolerant cache forum.hibernate.orgHi, I am new to Hibernate and was wondering if it is possible to create a write-only cache that is fault-tolerant. Here is my need : - my application makes no reads from the database (or everything is already cached) - all writes to the database should be fault-tolerant, i.e. if the DB connection is not available (DB down) then temporarily ... |
94. Cache forum.hibernate.orgHello Experts I was wondering if there is any way to store an object in Hibernate cache. In other words How can I store the transient object ? I don't want this object to be persisted when the session is flushed . One way to do that would be execute evict to remove the object from the cache before doing flush. ... |
95. Cached values forum.hibernate.orgpublic class X { int x; } public class Y { List |
96. Hibernate & org.hibernate.cache. JndiBoundTreeCacheProvi forum.hibernate.orgI am failing to use TreeCache with Hibernate in jboss 4.0.3 sp1 Hibernate and JBoss TreeCache are from original jboss 4.0.3 sp1 I successfully deployed boss.cache:service=TreeCache as mbean After that I registered it under jndi name MyCache Code: server> |
97. Help me with "Cache is not alive" forum.hibernate.orgHi, I found out that the error occured when i have a user object queried by one user, the other user update or delete the same user table (different records), when i try to get the property of the first user object it gave me Cache is not alive. there is no problems when i test the application using only one ... |
98. cache forum.hibernate.orgi look at the logs and see that second-level and query caches are disabled. it seems hibernate read these values from somewhere else. because i see the entries that i delete from the database (as i said i use MySql and i use MySql control center to delete entries) in my application. |
99. Hibernate cache forum.hibernate.orgHi I am trying to understand the second level cache behaviour. I see that we can cache classes and collections ( apart from query caching). I am trying to understand how a class cache works. If let us say I have a table User and I am going to build a query using 'firstName' - unless I use query cache, requests ... |
100. How to divide cache forum.hibernate.orgFair enough. I've never seen a best practice being metioned anywhere around here, but I would imagine that it depends on how you're using the cache. If you're intending to do some cache management (specifically, you want to be able to evict chunks of cache based on age), then you'll probably want to follow java's model: eden, survivor1, survivor2, old. If ... |