Arquivo.pt main goal is the preservation and access of web contents that are no longer available online. During the developing of the PWA IR (information retrieval) system we faced limitations in searching speed, quality of results, scalability and usability. To cope with this, we modified the archive-access project (http://archive-access.sourceforge.net/) to support our web archive IR requirements. Nutchwax, Nutch and Wayback’s code were adapted to meet the requirements. Several optimizations were added, such as simplifications in the way document versions are searched and several bottlenecks were resolved. The PWA search engine is a public service at http://archive.pt and a research platform for web archiving. As it predecessor Nutch, it runs over Hadoop clusters for distributed computing following the map-reduce paradigm. Its major features include fast full-text search, URL search, phrase search, faceted search (date, format, site), and sorting by relevance and date. The PWA search engine is highly scalable and its architecture is flexible enough to enable the deployment of different configurations to respond to the different needs. Currently, it serves an archive collection searchable by full-text with 180 million documents ranging between 1996 and 2010.
What happened?
A user suggested the site to be preserved but now he cannot access the archived content of the site, despite there are 33 versions listed on Arquivo.pt since September 2019.
We must check if there was a problem during the crawls or if it is a replay issue.
PedroG1515
commented
2 years ago
What is the URL that originated the issue? https://arquivo.pt/wayback/20190922164525/http://www.11cnef.pt/#
What happened? A user suggested the site to be preserved but now he cannot access the archived content of the site, despite there are 33 versions listed on Arquivo.pt since September 2019.
We must check if there was a problem during the crawls or if it is a replay issue.
Internet Archive has 6 versions of the site since August 12, 2020 but they are very incomplete with many missing images: https://web.archive.org/web/20200812230859/https://11cnef.pt/
The user said that he would like to recover the whole website.